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Peter Tuharsky

2019-Feb-09 08:12 UTC

[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

Thank You Rowland. I did it like You say, killed avahi, added the record 
without domain suffix, but nothing changed, and the record seems no 
different compared to other records added with the suffix some time before.

My Samba DNS record looks like this (and I see nothing special in there):

   Name=, Records=3, Children=0
     SOA: serial=39, refresh=900, retry=600, expire=86400, minttl=3600, 
ns=blacktux.interbronz.local., email=hostmaster.interbronz.local. 
(flags=600000f0, serial=39, ttl=3600)
     NS: blacktux.interbronz.local. (flags=600000f0, serial=1, ttl=900)
     A: 10.20.1.1 (flags=600000f0, serial=3, ttl=900)
   Name=_msdcs, Records=0, Children=0
   Name=_sites, Records=0, Children=1
   Name=_tcp, Records=0, Children=4
   Name=_udp, Records=0, Children=2
   Name=asus, Records=1, Children=0
     A: 10.20.4.69 (flags=f0, serial=27, ttl=900)
   Name=blacktux, Records=1, Children=0
     A: 10.20.1.1 (flags=f0, serial=2, ttl=900)
   Name=boss, Records=1, Children=0
     A: 10.20.3.78 (flags=f0, serial=39, ttl=900)
   Name=DomainDnsZones, Records=0, Children=2
   Name=ForestDnsZones, Records=0, Children=2
   Name=intelhd, Records=1, Children=0
     A: 10.20.1.82 (flags=f0, serial=20, ttl=900)
   Name=w7-virt, Records=1, Children=0
     A: 10.10.10.102 (flags=f0, serial=21, ttl=900)

Dňa 8. 2. 2019 o 21:56 Rowland Penny via samba
napísal(a):> On Fri, 8 Feb 2019 21:19:20 +0100
> Peter Tuharsky via samba <samba at lists.samba.org> wrote:
>
>> like this, Rowland:
>>
>> samba-tool dns add -U administrator 10.20.1.1 interbronz.local
>> asus.interbronz.local A 10.20.4.69
>>
> The syntax is:
> samba-tool dns add <server> <zone> <name> A <data>
>
>  From the above:
>
> <server> = 10.20.1.1
> <zone> = interbronz.local
> <name> = asus.interbronz.local
> <data> = 10.20.4.69
>
> Provided '10.20.1.1' is a Samba AD DC, this is okay.
> Provided 'interbronz.local' is the forward zone, this is okay.
> Provided '10.20.4.69' is the IP of 'asus.interbronz.local',
this is okay.
>
> The <name> is wrong, it should just be 'asus'
>
> If 'local' is your TLD, then turn off Avahi if it is running, this
> means anywhere in your Samba AD domain
>
> Rowland
>

Rowland Penny

2019-Feb-09 09:24 UTC

head link

[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

On Sat, 9 Feb 2019 09:12:28 +0100
Peter Tuharsky via samba <samba at lists.samba.org> wrote:
> Thank You Rowland. I did it like You say, killed avahi, added the
> record without domain suffix, but nothing changed, and the record
> seems no different compared to other records added with the suffix
> some time before.
> 
> My Samba DNS record looks like this (and I see nothing special in
> there):
> 
>    Name=, Records=3, Children=0
>      SOA: serial=39, refresh=900, retry=600, expire=86400,
> minttl=3600, ns=blacktux.interbronz.local.,
> email=hostmaster.interbronz.local. (flags=600000f0, serial=39,
> ttl=3600) NS: blacktux.interbronz.local. (flags=600000f0, serial=1,
> ttl=900) A: 10.20.1.1 (flags=600000f0, serial=3, ttl=900)
>    Name=_msdcs, Records=0, Children=0
>    Name=_sites, Records=0, Children=1
>    Name=_tcp, Records=0, Children=4
>    Name=_udp, Records=0, Children=2
>    Name=asus, Records=1, Children=0
>      A: 10.20.4.69 (flags=f0, serial=27, ttl=900)
>    Name=blacktux, Records=1, Children=0
>      A: 10.20.1.1 (flags=f0, serial=2, ttl=900)
>    Name=boss, Records=1, Children=0
>      A: 10.20.3.78 (flags=f0, serial=39, ttl=900)
>    Name=DomainDnsZones, Records=0, Children=2
>    Name=ForestDnsZones, Records=0, Children=2
>    Name=intelhd, Records=1, Children=0
>      A: 10.20.1.82 (flags=f0, serial=20, ttl=900)
>    Name=w7-virt, Records=1, Children=0
>      A: 10.10.10.102 (flags=f0, serial=21, ttl=900)
> 

Hmm, mine look different:

If I run (on a DC):

samba-tool dns query 127.0.0.1 samdom.example.com @ SOA

I get:

  Name=, Records=1, Children=0
    SOA: serial=3658, refresh=900, retry=600, expire=86400, minttl=3600,
ns=dc4.samdom.example.com., email=hostmaster.samdom.example.com.
(flags=600000f0, serial=3657, ttl=3600)
  Name=_sites, Records=0, Children=1
  Name=_tcp, Records=0, Children=5
  Name=_udp, Records=0, Children=2
  Name=EAP-WIN7, Records=0, Children=0
  Name=DomainDnsZones, Records=0, Children=2
  Name=ForestDnsZones, Records=0, Children=2
  Name=EAPDEV-PC, Records=0, Children=0
  Name=DC4, Records=0, Children=0
  Name=.................
  ...........
  and so on

The '_msdcs' record isn't there.
There are no 'A' records.

If I run (again on a DC):

ldbsearch --cross-ncs --show-binary -H '/var/lib/samba/private/sam.ldb'
-b
'DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com'
-s sub '(&(objectClass=dnsNode)(DC=@))'

NOTE: the above should all be on one line.

I get:

# record 1
dn:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
objectClass: top
objectClass: dnsNode
instanceType: 4
whenCreated: 20151106115624.0Z
uSNCreated: 4060
showInAdvancedViewOnly: TRUE
name: @
objectGUID: 7ad014c4-c1e9-4cb4-9f0d-96d0272af23d
objectCategory:
CN=Dns-Node,CN=Schema,CN=Configuration,DC=samdom,DC=example,DC=com
dc: @
whenChanged: 20190209090653.0Z
dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x004f (79)
        wType                    : DNS_TYPE_SOA (6)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000e10 (3600)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ec99 (3665049)
        data                     : union dnsRecordData(case 6)
        soa: struct dnsp_soa
            serial                   : 0x00000e4e (3662)
            refresh                  : 0x00000384 (900)
            retry                    : 0x00000258 (600)
            expire                   : 0x00015180 (86400)
            minimum                  : 0x00000e10 (3600)
            mname                    : dc4.samdom.example.com
            rname                    : hostmaster.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x001a (26)
        wType                    : DNS_TYPE_NS (2)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037a459 (3646553)
        data                     : union dnsRecordData(case 2)
        ns                       : dc3.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x001a (26)
        wType                    : DNS_TYPE_NS (2)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ceba (3657402)
        data                     : union dnsRecordData(case 2)
        ns                       : dc4.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x0004 (4)
        wType                    : DNS_TYPE_A (1)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037a459 (3646553)
        data                     : union dnsRecordData(case 1)
        ipv4                     : 192.168.0.7

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x0004 (4)
        wType                    : DNS_TYPE_A (1)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ceba (3657402)
        data                     : union dnsRecordData(case 1)
        ipv4                     : 192.168.0.6

uSNChanged: 402651
distinguishedName:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com

# returned 1 records
# 1 entries
# 0 referrals

Rowland

Peter Tuharsky

2019-Feb-09 10:13 UTC

head link

[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

For me it's similar:

# record 1
dn: 
DC=@,DC=interbronz.local,CN=MicrosoftDNS,DC=DomainDnsZones,DC=interbronz,DC=local
objectClass: top
objectClass: dnsNode
instanceType: 4
whenCreated: 20190102232229.0Z
uSNCreated: 3657
showInAdvancedViewOnly: TRUE
name: @
objectGUID: 54d20bc1-1700-4464-a778-4fe77967d5fa
objectCategory: 
CN=Dns-Node,CN=Schema,CN=Configuration,DC=interbronz,DC=local
dc: @
dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
         wDataLength              : 0x0050 (80)
         wType                    : DNS_TYPE_SOA (6)
         version                  : 0x05 (5)
         rank                     : DNS_RANK_ZONE (240)
         flags                    : 0x0000 (0)
         dwSerial                 : 0x00000027 (39)
         dwTtlSeconds             : 0x00000e10 (3600)
         dwReserved               : 0x00000000 (0)
         dwTimeStamp              : 0x0037ec98 (3665048)
         data                     : union dnsRecordData(case 6)
         soa: struct dnsp_soa
             serial                   : 0x00000027 (39)
             refresh                  : 0x00000384 (900)
             retry                    : 0x00000258 (600)
             expire                   : 0x00015180 (86400)
             minimum                  : 0x00000e10 (3600)
             mname                    : blacktux.interbronz.local
             rname                    : hostmaster.interbronz.local

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
         wDataLength              : 0x001d (29)
         wType                    : DNS_TYPE_NS (2)
         version                  : 0x05 (5)
         rank                     : DNS_RANK_ZONE (240)
         flags                    : 0x0000 (0)
         dwSerial                 : 0x00000001 (1)
         dwTtlSeconds             : 0x00000384 (900)
         dwReserved               : 0x00000000 (0)
         dwTimeStamp              : 0x00000000 (0)
         data                     : union dnsRecordData(case 2)
         ns                       : blacktux.interbronz.local

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
         wDataLength              : 0x0004 (4)
         wType                    : DNS_TYPE_A (1)
         version                  : 0x05 (5)
         rank                     : DNS_RANK_ZONE (240)
         flags                    : 0x0000 (0)
         dwSerial                 : 0x00000003 (3)
         dwTtlSeconds             : 0x00000384 (900)
         dwReserved               : 0x00000000 (0)
         dwTimeStamp              : 0x0037e917 (3664151)
         data                     : union dnsRecordData(case 1)
         ipv4                     : 10.20.1.1

whenChanged: 20190209080809.0Z
uSNChanged: 4066
distinguishedName: 
DC=@,DC=interbronz.local,CN=MicrosoftDNS,DC=DomainDnsZones,DC=interbronz,DC=local

# returned 1 records
# 1 entries
# 0 referrals

Dňa 9. 2. 2019 o 10:24 Rowland Penny via samba
napísal(a):> On Sat, 9 Feb 2019 09:12:28 +0100
> Peter Tuharsky via samba <samba at lists.samba.org> wrote:
>
>> Thank You Rowland. I did it like You say, killed avahi, added the
>> record without domain suffix, but nothing changed, and the record
>> seems no different compared to other records added with the suffix
>> some time before.
>>
>> My Samba DNS record looks like this (and I see nothing special in
>> there):
>>
>>     Name=, Records=3, Children=0
>>       SOA: serial=39, refresh=900, retry=600, expire=86400,
>> minttl=3600, ns=blacktux.interbronz.local.,
>> email=hostmaster.interbronz.local. (flags=600000f0, serial=39,
>> ttl=3600) NS: blacktux.interbronz.local. (flags=600000f0, serial=1,
>> ttl=900) A: 10.20.1.1 (flags=600000f0, serial=3, ttl=900)
>>     Name=_msdcs, Records=0, Children=0
>>     Name=_sites, Records=0, Children=1
>>     Name=_tcp, Records=0, Children=4
>>     Name=_udp, Records=0, Children=2
>>     Name=asus, Records=1, Children=0
>>       A: 10.20.4.69 (flags=f0, serial=27, ttl=900)
>>     Name=blacktux, Records=1, Children=0
>>       A: 10.20.1.1 (flags=f0, serial=2, ttl=900)
>>     Name=boss, Records=1, Children=0
>>       A: 10.20.3.78 (flags=f0, serial=39, ttl=900)
>>     Name=DomainDnsZones, Records=0, Children=2
>>     Name=ForestDnsZones, Records=0, Children=2
>>     Name=intelhd, Records=1, Children=0
>>       A: 10.20.1.82 (flags=f0, serial=20, ttl=900)
>>     Name=w7-virt, Records=1, Children=0
>>       A: 10.10.10.102 (flags=f0, serial=21, ttl=900)
>>
>
> Hmm, mine look different:
>
> If I run (on a DC):
>
> samba-tool dns query 127.0.0.1 samdom.example.com @ SOA
>
> I get:
>
>    Name=, Records=1, Children=0
>      SOA: serial=3658, refresh=900, retry=600, expire=86400, minttl=3600,
ns=dc4.samdom.example.com., email=hostmaster.samdom.example.com.
(flags=600000f0, serial=3657, ttl=3600)
>    Name=_sites, Records=0, Children=1
>    Name=_tcp, Records=0, Children=5
>    Name=_udp, Records=0, Children=2
>    Name=EAP-WIN7, Records=0, Children=0
>    Name=DomainDnsZones, Records=0, Children=2
>    Name=ForestDnsZones, Records=0, Children=2
>    Name=EAPDEV-PC, Records=0, Children=0
>    Name=DC4, Records=0, Children=0
>    Name=.................
>    ...........
>    and so on
>
> The '_msdcs' record isn't there.
> There are no 'A' records.
>
> If I run (again on a DC):
>
> ldbsearch --cross-ncs --show-binary -H
'/var/lib/samba/private/sam.ldb'
> -b
>
'DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com'
> -s sub '(&(objectClass=dnsNode)(DC=@))'
>
> NOTE: the above should all be on one line.
>
> I get:
>
> # record 1
> dn:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
> objectClass: top
> objectClass: dnsNode
> instanceType: 4
> whenCreated: 20151106115624.0Z
> uSNCreated: 4060
> showInAdvancedViewOnly: TRUE
> name: @
> objectGUID: 7ad014c4-c1e9-4cb4-9f0d-96d0272af23d
> objectCategory:
CN=Dns-Node,CN=Schema,CN=Configuration,DC=samdom,DC=example,DC=com
> dc: @
> whenChanged: 20190209090653.0Z
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>          wDataLength              : 0x004f (79)
>          wType                    : DNS_TYPE_SOA (6)
>          version                  : 0x05 (5)
>          rank                     : DNS_RANK_ZONE (240)
>          flags                    : 0x0000 (0)
>          dwSerial                 : 0x00000e4d (3661)
>          dwTtlSeconds             : 0x00000e10 (3600)
>          dwReserved               : 0x00000000 (0)
>          dwTimeStamp              : 0x0037ec99 (3665049)
>          data                     : union dnsRecordData(case 6)
>          soa: struct dnsp_soa
>              serial                   : 0x00000e4e (3662)
>              refresh                  : 0x00000384 (900)
>              retry                    : 0x00000258 (600)
>              expire                   : 0x00015180 (86400)
>              minimum                  : 0x00000e10 (3600)
>              mname                    : dc4.samdom.example.com
>              rname                    : hostmaster.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>          wDataLength              : 0x001a (26)
>          wType                    : DNS_TYPE_NS (2)
>          version                  : 0x05 (5)
>          rank                     : DNS_RANK_ZONE (240)
>          flags                    : 0x0000 (0)
>          dwSerial                 : 0x00000e4d (3661)
>          dwTtlSeconds             : 0x00000384 (900)
>          dwReserved               : 0x00000000 (0)
>          dwTimeStamp              : 0x0037a459 (3646553)
>          data                     : union dnsRecordData(case 2)
>          ns                       : dc3.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>          wDataLength              : 0x001a (26)
>          wType                    : DNS_TYPE_NS (2)
>          version                  : 0x05 (5)
>          rank                     : DNS_RANK_ZONE (240)
>          flags                    : 0x0000 (0)
>          dwSerial                 : 0x00000e4d (3661)
>          dwTtlSeconds             : 0x00000384 (900)
>          dwReserved               : 0x00000000 (0)
>          dwTimeStamp              : 0x0037ceba (3657402)
>          data                     : union dnsRecordData(case 2)
>          ns                       : dc4.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>          wDataLength              : 0x0004 (4)
>          wType                    : DNS_TYPE_A (1)
>          version                  : 0x05 (5)
>          rank                     : DNS_RANK_ZONE (240)
>          flags                    : 0x0000 (0)
>          dwSerial                 : 0x00000e4d (3661)
>          dwTtlSeconds             : 0x00000384 (900)
>          dwReserved               : 0x00000000 (0)
>          dwTimeStamp              : 0x0037a459 (3646553)
>          data                     : union dnsRecordData(case 1)
>          ipv4                     : 192.168.0.7
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>          wDataLength              : 0x0004 (4)
>          wType                    : DNS_TYPE_A (1)
>          version                  : 0x05 (5)
>          rank                     : DNS_RANK_ZONE (240)
>          flags                    : 0x0000 (0)
>          dwSerial                 : 0x00000e4d (3661)
>          dwTtlSeconds             : 0x00000384 (900)
>          dwReserved               : 0x00000000 (0)
>          dwTimeStamp              : 0x0037ceba (3657402)
>          data                     : union dnsRecordData(case 1)
>          ipv4                     : 192.168.0.6
>
> uSNChanged: 402651
> distinguishedName:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
>
> # returned 1 records
> # 1 entries
> # 0 referrals
>
> Rowland
>

Mgr. Peter Tuharsky

2019-Feb-20 09:28 UTC

head link

[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

Well, the mystery is solved. It WAS Avahi, in a way... Eventhough it was
disabled as a daemon, it still haunted the system by the means of
nsswitch.conf

In the 'hosts' line, the Debian default entry 'mdns4_minimal
[NOTFOUND=return]' does exactly what we don't want - for .local domains
it asks Avahi and if it dosen't know, it never asks the other services,
such as dns etc.

I hope the documentation (Wiki) should be more vocal about that - that
if the domain is .local, the 'dns' entry MUST precede
'mdns4_minimal'
and 'mdns4' entries.


Dňa 9. 2. 2019 o 10:24 Rowland Penny via samba
napísal(a):> On Sat, 9 Feb 2019 09:12:28 +0100
> Peter Tuharsky via samba <samba at lists.samba.org> wrote:
>
>> Thank You Rowland. I did it like You say, killed avahi, added the
>> record without domain suffix, but nothing changed, and the record
>> seems no different compared to other records added with the suffix
>> some time before.
>>
>> My Samba DNS record looks like this (and I see nothing special in
>> there):
>>
>>    Name=, Records=3, Children=0
>>      SOA: serial=39, refresh=900, retry=600, expire=86400,
>> minttl=3600, ns=blacktux.interbronz.local.,
>> email=hostmaster.interbronz.local. (flags=600000f0, serial=39,
>> ttl=3600) NS: blacktux.interbronz.local. (flags=600000f0, serial=1,
>> ttl=900) A: 10.20.1.1 (flags=600000f0, serial=3, ttl=900)
>>    Name=_msdcs, Records=0, Children=0
>>    Name=_sites, Records=0, Children=1
>>    Name=_tcp, Records=0, Children=4
>>    Name=_udp, Records=0, Children=2
>>    Name=asus, Records=1, Children=0
>>      A: 10.20.4.69 (flags=f0, serial=27, ttl=900)
>>    Name=blacktux, Records=1, Children=0
>>      A: 10.20.1.1 (flags=f0, serial=2, ttl=900)
>>    Name=boss, Records=1, Children=0
>>      A: 10.20.3.78 (flags=f0, serial=39, ttl=900)
>>    Name=DomainDnsZones, Records=0, Children=2
>>    Name=ForestDnsZones, Records=0, Children=2
>>    Name=intelhd, Records=1, Children=0
>>      A: 10.20.1.82 (flags=f0, serial=20, ttl=900)
>>    Name=w7-virt, Records=1, Children=0
>>      A: 10.10.10.102 (flags=f0, serial=21, ttl=900)
>>
>
> Hmm, mine look different:
>
> If I run (on a DC):
>
> samba-tool dns query 127.0.0.1 samdom.example.com @ SOA
>
> I get:
>
>   Name=, Records=1, Children=0
>     SOA: serial=3658, refresh=900, retry=600, expire=86400, minttl=3600,
ns=dc4.samdom.example.com., email=hostmaster.samdom.example.com.
(flags=600000f0, serial=3657, ttl=3600)
>   Name=_sites, Records=0, Children=1
>   Name=_tcp, Records=0, Children=5
>   Name=_udp, Records=0, Children=2
>   Name=EAP-WIN7, Records=0, Children=0
>   Name=DomainDnsZones, Records=0, Children=2
>   Name=ForestDnsZones, Records=0, Children=2
>   Name=EAPDEV-PC, Records=0, Children=0
>   Name=DC4, Records=0, Children=0
>   Name=.................
>   ...........
>   and so on
>
> The '_msdcs' record isn't there.
> There are no 'A' records.
>
> If I run (again on a DC):
>
> ldbsearch --cross-ncs --show-binary -H
'/var/lib/samba/private/sam.ldb'
> -b
>
'DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com'
> -s sub '(&(objectClass=dnsNode)(DC=@))'
>
> NOTE: the above should all be on one line.
>
> I get:
>
> # record 1
> dn:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
> objectClass: top
> objectClass: dnsNode
> instanceType: 4
> whenCreated: 20151106115624.0Z
> uSNCreated: 4060
> showInAdvancedViewOnly: TRUE
> name: @
> objectGUID: 7ad014c4-c1e9-4cb4-9f0d-96d0272af23d
> objectCategory:
CN=Dns-Node,CN=Schema,CN=Configuration,DC=samdom,DC=example,DC=com
> dc: @
> whenChanged: 20190209090653.0Z
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>         wDataLength              : 0x004f (79)
>         wType                    : DNS_TYPE_SOA (6)
>         version                  : 0x05 (5)
>         rank                     : DNS_RANK_ZONE (240)
>         flags                    : 0x0000 (0)
>         dwSerial                 : 0x00000e4d (3661)
>         dwTtlSeconds             : 0x00000e10 (3600)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x0037ec99 (3665049)
>         data                     : union dnsRecordData(case 6)
>         soa: struct dnsp_soa
>             serial                   : 0x00000e4e (3662)
>             refresh                  : 0x00000384 (900)
>             retry                    : 0x00000258 (600)
>             expire                   : 0x00015180 (86400)
>             minimum                  : 0x00000e10 (3600)
>             mname                    : dc4.samdom.example.com
>             rname                    : hostmaster.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>         wDataLength              : 0x001a (26)
>         wType                    : DNS_TYPE_NS (2)
>         version                  : 0x05 (5)
>         rank                     : DNS_RANK_ZONE (240)
>         flags                    : 0x0000 (0)
>         dwSerial                 : 0x00000e4d (3661)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x0037a459 (3646553)
>         data                     : union dnsRecordData(case 2)
>         ns                       : dc3.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>         wDataLength              : 0x001a (26)
>         wType                    : DNS_TYPE_NS (2)
>         version                  : 0x05 (5)
>         rank                     : DNS_RANK_ZONE (240)
>         flags                    : 0x0000 (0)
>         dwSerial                 : 0x00000e4d (3661)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x0037ceba (3657402)
>         data                     : union dnsRecordData(case 2)
>         ns                       : dc4.samdom.example.com
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>         wDataLength              : 0x0004 (4)
>         wType                    : DNS_TYPE_A (1)
>         version                  : 0x05 (5)
>         rank                     : DNS_RANK_ZONE (240)
>         flags                    : 0x0000 (0)
>         dwSerial                 : 0x00000e4d (3661)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x0037a459 (3646553)
>         data                     : union dnsRecordData(case 1)
>         ipv4                     : 192.168.0.7
>
> dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
>         wDataLength              : 0x0004 (4)
>         wType                    : DNS_TYPE_A (1)
>         version                  : 0x05 (5)
>         rank                     : DNS_RANK_ZONE (240)
>         flags                    : 0x0000 (0)
>         dwSerial                 : 0x00000e4d (3661)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x0037ceba (3657402)
>         data                     : union dnsRecordData(case 1)
>         ipv4                     : 192.168.0.6
>
> uSNChanged: 402651
> distinguishedName:
DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
>
> # returned 1 records
> # 1 entries
> # 0 referrals
>
> Rowland
>

L.P.H. van Belle

2019-Feb-20 10:17 UTC

head link

[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

Hai, 
> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Mgr. 
> Peter Tuharsky via samba
> Verzonden: woensdag 20 februari 2019 10:28
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] Samba + BIND9 DLZ. DNS dosen't resolve 
> FQDN, only short hostname
> 
> Well, the mystery is solved. It WAS Avahi, in a way... This is said wrong. ... 
> Eventhough it was disabled as a daemon, 
> it still haunted the system by the means of nsswitch.conf
> 
> In the 'hosts' line, the Debian default entry 'mdns4_minimal
> [NOTFOUND=return]' does exactly what we don't want - for 
> .local domains
> it asks Avahi and if it dosen't know, it never asks the other 
> services,
> such as dns etc.
And wrong is `the domain is .local` 
Why o why is .local use. That is a reserved name for mDNS (avahi).. Yes. 
So what happend here is TOTALY CORRECT. Here the problem is you are using 
.local
> 
> I hope the documentation (Wiki) should be more vocal about that - that
> if the domain is .local, the 'dns' entry MUST precede
'mdns4_minimal'
> and 'mdns4' entries.
Possible yes, but if correctly setup, not needed. 
And a bit ahead thinking people... Future systems, will mostly use systemd, if
we like it or not.

Then if systemd is use correctly and you use the systemd-resolvd, you get this.
A random new server im setting up, not a samba server, but that not the point,
the point is resolving,
And what you see in this output. 

sudo resolvectl  ( the defaults ) 
Global
       LLMNR setting: yes
MulticastDNS setting: yes
  DNSOverTLS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
Fallback DNS Servers: 8.8.8.8
                      8.8.4.4
                      2001:4860:4860::8888
                      2001:4860:4860::8844
          DNSSEC NTA: 10.in-addr.arpa
                      16.172.in-addr.arpa
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa
                      18.172.in-addr.arpa
                      19.172.in-addr.arpa
                      20.172.in-addr.arpa
                      21.172.in-addr.arpa
                      22.172.in-addr.arpa
                      23.172.in-addr.arpa
                      24.172.in-addr.arpa
                      25.172.in-addr.arpa
                      26.172.in-addr.arpa
                      27.172.in-addr.arpa
                      28.172.in-addr.arpa
                      29.172.in-addr.arpa
                      30.172.in-addr.arpa
                      31.172.in-addr.arpa
                      corp
                      d.f.ip6.arpa
                      home
                      internal
                      intranet
                      lan
                      local
                      private
                      test

So what you shouldn't be using for samba domains:  
	                .corp
                      .home
                      .internal
                      .intranet
                      .lan
                      .local
                      .private
                      .test


More ahead,  about LLMNR
https://en.wikipedia.org/wiki/Link-Local_Multicast_Name_Resolution 
See also.. 
Network Basic Input/Output System (NetBIOS)
Peer Name Resolution Protocol (Pt DNS (mDNS)
Zero-configuration networking (Zeroconf)
Now mix this and what do you get. 
Samba + avahi and the use for LLMNR to replace netbios. 
But is this what you want.. 

I dont think so. 
Read : https://www.blackhillsinfosec.com/how-to-disable-llmnr-why-you-want-to/ 
https://www.crowe.com/cybersecurity-watch/netbios-llmnr-giving-away-credentials 
https://attack.mitre.org/techniques/T1171/ 

So why again is it so important to have a perfect dns setup..... 
So you dont have to use LLMNR or netbios anymore. 

But if you setup correct, avahi and dns can exist fine on a samba network. 
But again, this is my personal opinion, not recommended. 

Greetz, 

Louis

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