[ale] Linux Bind9 and Windows .local dns?

[Scott Plante]

That's a good idea. If you aren't comfortable with Wireshark, you could try this first. From a Windows cmd box: 
ipconfig /all | findstr /C:"DNS Server" 


That should return one or more IP addresses of the regular DNS servers you have. Suppose it returns 10.1.1.5 and 10.2.1.5, from your Linux shell: 
host somefileserver.local 10.1.1.5 
host somefileserver.local 10.2.1.5 
See if either of them return the IP of somefileserver.local (or whatever the hostname is you're looking for). 


If it does, then you have a regular DNS server that will respond and the issue will be your bind configuration. If it doesn't then you'll have to go another route. 


Scott 

----- Original Message -----

From: "Derek Atkins" <warlord at MIT.EDU> 
To: "Atlanta Linux Enthusiasts" <ale at ale.org> 
Sent: Tuesday, March 3, 2015 9:52:59 AM 
Subject: Re: [ale] Linux Bind9 and Windows .local dns? 

Try to set up a wireshark session to see who the windows box is actually 
asking. Is it using mDNS or is it asking the configured DNS Server? 
Once you see what's going over the network you might better see where 
the issue is and try to fix it. 

-derek 

"Robert L. Harris" <robert.l.harris at gmail.com> writes: 

> Corp is using .local for some internal services such as a key file server. I 
> have no control over it. 
> 
> The first key issue I'm seeing is a windows box on my 172.27 subnet can ping 
> the file server but trying to do a dns lookup on the hostname is failing to 
> resolve. As a result all the procedures that tell my manufacturing users to 
> open "\\share.local\Manufacturing" fail and updating them to do \\ 
> 10.bbb.ccc.ddd\Manufacturing" would cause a lot more pain than it's worth. 
> 
> My Linux bind server has the windows domain servers as the upstream dns in my 
> resolv.conf but I've never had to deal with this type of forwarding before so 
> I'm not sure where the breakage is. 
> 
> Unfortunately we have critical documents on the shared server and I need to 
> get it working this way. 
> 
> Robert 
> 
> On Mon, Mar 2, 2015 at 11:59 AM LnxGnome <lnxgnome at hopnet.net> wrote: 
> 
> .local is a concept of multicast DNS. If the host.local speaks mDNS, it 
> should be responding to those replies for itself. This works find for a 
> small shared LAN. 
> 
> If you have a distributed / firewalled network that isn't passing mDNS 
> between segments, that is probably causing your problem. In this 
> situation, don't use ".local". 
> 
> --LnxGnome 
> 
> On 3/2/15 12:35 PM, Robert L. Harris wrote: 
> 
> I've set up a bind9 server ( Ubuntu ) for a subnet ( 172.27/16 ) at 
> work to support some lab space. I've found a problem where it seems 
> some Windows boxes are not correctly resolving the corp.local domain 
> even though I'm referencing the corp dns servers and internal.corp.com 
> works just fine, just not the .local. I can access with \\ 
> aaa.bbb.ccc.dd\share correctly and ping aaa.bbb.ccc.ddd without issue. 
> 
> Anyone seen this or have a link? Googling "linux bind9 windows domain" 
> provides a lot of red herrings. 
> 
> Robert 
> 
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-- 
Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory 
Member, MIT Student Information Processing Board (SIPB) 
URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH 
warlord at MIT.EDU PGP key available 

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