Well its actually a Rasberpi that is involved in presenting some debugging test online. We also don't set connections to register in DNS. I went trough all our zones, listing all IP's (one can sort based upon IP, to quickly find something) But it did not reveal any host containing this IP number. And yes I'm aware the Windows internet naming system, WINS is not DNS, a great relief :)) I just wanted to be sure to it wasn't a wrong cashed wins result. (despite DNS wins lookup is disabled as well) Just for the record neither it is a hosts file entry on the DNS server. So I do not know where this IP number comes from, despite that DNS hands it out. PS I always switch to text based email for emails to this forum. Is that needed ? we're normally using webmail format, (kopano) -----Original message-----> From: Rowland penny <rpenny at samba.org> > Sent: Tuesday 30th March 2021 11:01 > To: samba at lists.samba.org > Subject: Re: [Samba] DNS returns a wrong ip address > > On 30/03/2021 09:15, Peter Boos via samba wrote: > > We got two samba DC's with DNS, managed by a windows system with admin tools > installed. > > If I ping a certain client a testing system it does return on a wrong IP > (and then fails ping). > > The returned IP is 192.168.99.21 while we use a 172.x.x.x network > > It returns a dual host reply but 192 first 172 next, I checked both DNS > systems from Windows side. > > Also NSlookup on Linux > > > > The entry is not visible on the windows system with admin tools. > > Even when I removed the proper available entry, a nslookup resulted in an > wrong answer. > > When I tried a wins lookup nmblookup it cannot resolve it either, so I don't > know where it comes from. > > There are no other DNS's servers involved then just the two we have. > > Like its not a forward lookup result on pfsense or so, we don't do DNS there. > > Just for the record; the samba systems are headless systems. > > > > Any ideas on how to resolve this DNS conflict? > > > > > > First, 'wins' != 'dns', so forget nmblookup, just use dns tools. > > If you have '192.168.99.21' in AD, then something is putting it there > and as only Windows machines do this by default, it is very probably a > Windows machine. It sounds like you know which machine this is, so does > it have two network devices ? If it does, can you remove one ? > > Rowland > > > > >
This might be a "guest" pc with the static ip configured. Often these are laptops where one interface holded the ip from its "powersafe/hibernation" state. Disable that.. if you want problems, use powersafe/hibernations functions from windows 10.. but thats my advice.. Doesnt : arp -a show it's mac adres? then you can find at least the brand maker. And should not be needed to change the format of the mails, But text emails "is" the RFC standard, html is not. ;-) Greetz, Louis> -----Oorspronkelijk bericht----- > Van: samba [mailto:samba-bounces at lists.samba.org] Namens Peter Boos via > samba > Verzonden: dinsdag 30 maart 2021 15:56 > Aan: Rowland penny > CC: samba at lists.samba.org > Onderwerp: Re: [Samba] DNS returns a wrong ip address > > Well its actually a Rasberpi that is involved in presenting some debugging > test online. > We also don't set connections to register in DNS. > > I went trough all our zones, listing all IP's (one can sort based upon IP, > to quickly find something) > But it did not reveal any host containing this IP number. > > And yes I'm aware the Windows internet naming system, WINS is not DNS, a > great relief :)) > I just wanted to be sure to it wasn't a wrong cashed wins result. (despite > DNS wins lookup is disabled as well) > Just for the record neither it is a hosts file entry on the DNS server. > So I do not know where this IP number comes from, despite that DNS hands > it out. > > > PS I always switch to text based email for emails to this forum. > Is that needed ? we're normally using webmail format, (kopano) > > > -----Original message----- > > From: Rowland penny <rpenny at samba.org> > > Sent: Tuesday 30th March 2021 11:01 > > To: samba at lists.samba.org > > Subject: Re: [Samba] DNS returns a wrong ip address > > > > On 30/03/2021 09:15, Peter Boos via samba wrote: > > > We got two samba DC's with DNS, managed by a windows system with admin > tools > > installed. > > > If I ping a certain client a testing system it does return on a wrong > IP > > (and then fails ping). > > > The returned IP is 192.168.99.21 while we use a 172.x.x.x network > > > It returns a dual host reply but 192 first 172 next, I checked both > DNS > > systems from Windows side. > > > Also NSlookup on Linux > > > > > > The entry is not visible on the windows system with admin tools. > > > Even when I removed the proper available entry, a nslookup resulted in > an > > wrong answer. > > > When I tried a wins lookup nmblookup it cannot resolve it either, so I > don't > > know where it comes from. > > > There are no other DNS's servers involved then just the two we have. > > > Like its not a forward lookup result on pfsense or so, we don't do DNS > there. > > > Just for the record; the samba systems are headless systems. > > > > > > Any ideas on how to resolve this DNS conflict? > > > > > > > > > > First, 'wins' != 'dns', so forget nmblookup, just use dns tools. > > > > If you have '192.168.99.21' in AD, then something is putting it there > > and as only Windows machines do this by default, it is very probably a > > Windows machine. It sounds like you know which machine this is, so does > > it have two network devices ? If it does, can you remove one ? > > > > Rowland > > > > > > > > > > > > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/options/samba
On 30/03/2021 14:55, Peter Boos wrote:> Well its actually a Rasberpi that is involved in presenting some debugging test online. > We also don't set connections to register in DNS.Turn off wlan0 Just been there, just done that ?> > I went trough all our zones, listing all IP's (one can sort based upon IP, to quickly find something) > But it did not reveal any host containing this IP number. > > And yes I'm aware the Windows internet naming system, WINS is not DNS, a great relief :)) > I just wanted to be sure to it wasn't a wrong cashed wins result. (despite DNS wins lookup is disabled as well) > Just for the record neither it is a hosts file entry on the DNS server. > So I do not know where this IP number comes from, despite that DNS hands it out.In an effort to be greener, I am moving to rpi4 DC's and so I know all about the problems of having two network devices, I had to turn of wifi, otherwise I ended up with two ipaddresses for the DC> > > PS I always switch to text based email for emails to this forum. > Is that needed ? we're normally using webmail format, (kopano)The problem with webmail is that most of them are, by default, HTML and it is that which is the problem, I prefer text emails but others may have different opinions. Rowland