Wildcard SRV record?

Eldridge, Rod A [ITNET] rod at iastate.edu
Mon Oct 31 17:08:38 UTC 2016


Wouldn't you just need this one SRV record: 

_vlmcs._tcp.foo IN SRV 0 0 1688 ais-dc01.ainfosec.com.

[ see https://blogs.technet.microsoft.com/odsupport/2011/11/14/how-to-discover-office-and-windows-kms-hosts-via-dns-and-remove-unauthorized-instances/ ]


--
Rod Eldridge
Networks & Communications
IT Services, Iowa State University of Science and Technology



> On Oct 31, 2016, at 11:35 AM, Stephen Pape <srpape at gmail.com> wrote:
> 
> Hello all,
> 
> I have bind configured with a single TLD (.foo), and inside that are
> records for a large number of subdomains (machine1.a.foo,
> machine2.a.foo, machine1.b.foo, machine2.b.foo, etc.). DHCP clients
> are assigned a domain based on some factors, but it might be a.foo,
> b.foo, c.foo, etc.
> 
> I'm trying to add a SRV record for everyone under .foo. I've tried:
> 
> _vlmcs._tcp.*.foo.        IN      SRV     0 0 1688 ais-dc01.ainfosec.com.
> 
> ... but it seems that wildcards don't work that way. I've tried
> something similar with CNAMEs, but that didn't work either.
> 
> What DOES work is adding a CNAME record for each and every domain that
> I need. So a CNAME for _vlmcs._tcp.a.foo, _vlmcs._tcp.b.foo, etc.
> 
> Is there a better way for me to do this, or do I have to generate a
> whole lot of specific CNAME records?
> 
> Thanks!
> 
> -Stephen
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