samba - Jul 2019 - IPv6 Reverse Lookup Zone (Internal DNS) [SEC=UNCLASSIFIED]

UNCLASSIFIED
Hi,

I can successfully setup an IPv6 Reverse Lookup Zone (Samba 4.8.0 Internal DNS)
and add valid PTR entries using samba-tool and/or RSAT DNS.
However I cannot view the PTR records with samba-tool or RSAT.

[root at bilbo user]# samba-tool dns add localhost
4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa 5.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0 PTR
brutus.dev.local
Password for [administrator at DEV.LOCAL]:
Record added successfully
[root at bilbo user]# nslookup fd87:0674:b039:c7e4::55
Server:                 131.185.87.4
Address:              131.185.87.4#53

5.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa        
name = brutus.dev.local.

[root at bilbo user]# samba-tool dns query localhost
4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa @ ALL
Password for [administrator at DEV.LOCAL]:
  Name=, Records=3, Children=0
    SOA: serial=11, refresh=900, retry=600, expire=86400, minttl=3600,
ns=bilbo.dev.local., email=hostmaster.dev.local. (flags=600000f0, serial=11,
ttl=3600)
    NS: jimbo.dev.local. (flags=600000f0, serial=1, ttl=3600)
    NS: bilbo.dev.local. (flags=600000f0, serial=3, ttl=900)
  Name=0, Records=0, Children=1

I can add and view non-functional PTR records with samba-tool.

[root at bilbo user]# samba-tool dns add localhost
4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa 0000:0000:0000:0050 PTR
sherri.dev.local
Password for [administrator at DEV.LOCAL]:
Record added successfully
[root at bilbo user]# nslookup fd87:0674:b039:c7e4::50
;; Got recursion not available from 131.185.87.4, trying next server
;; Got recursion not available from 131.185.87.4, trying next server
Server:                 131.185.87.123
Address:              131.185.87.123#53

** server can't find
0.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa:
NXDOMAIN

[root at bilbo user]# samba-tool dns query localhost
4.e.7.c.9.3.0.b.4.7.6.0.7.8.d.f.ip6.arpa @ ALL
Password for [administrator at DEV.LOCAL]:
  Name=, Records=3, Children=0
    SOA: serial=12, refresh=900, retry=600, expire=86400, minttl=3600,
ns=bilbo.dev.local., email=hostmaster.dev.local. (flags=600000f0, serial=12,
ttl=3600)
    NS: jimbo.dev.local. (flags=600000f0, serial=1, ttl=3600)
    NS: bilbo.dev.local. (flags=600000f0, serial=3, ttl=900)
  Name=0, Records=0, Children=1
  Name=0000:0000:0000:0050, Records=1, Children=0
    PTR: sherri.dev.local (flags=f0, serial=12, ttl=900)
[root at bilbo user]#

The RSAT DNS tool shows a folder labelled 0 for the valid PTR record and the
"correct" data for the non-functional PTR record.

This problem has seemingly been reported before

https://lists.samba.org/archive/samba/2018-January/213103.html

Am I doing something wrong or is this a bug?

Cheers
Russell Thamm



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