Weird DNS problem - solves Alias but not CNAME

I use the DNS server role on Windows Server 2012 R2 on a physical machine on my home network.

3 of my 5 machines are working properly and I can solve real host as alias names, but on 2 other machines, I can't resolve host names real (with Ping) even though I can still resolve alias - which seems really odd to me.                              .

.10 - server 2012 (physical) R2 - both Alias and CNAME ping. (Displayed IPv4).

.20 - server 2012 (virtual) R2 - both Alias and CNAME ping. (Displayed IPv4).

.21 pings - 2012 R2 (virtual) server - CNAME, Alias (displayed) ipV4 does not ping.  Nslookup can resolve CNAME.

.22 pings - 2012 R2 (virtual) server - ipv4 (displayed) Alias, CNAME also Pings but displayed ipV6

.99 - Windows 7 (virtual) - Alias pings (display ipV4), CNAME not not ping.  NSLookup can resolve CNAME.

All of the above machines are members of the same domain and that you have a single DNS server assigned (. 10)

Given that 3 of the 5 machines are able to resolve the names, I have to assume that the DNS server is configured correctly.

The computers seem to be set up exactly the same way.

In all pings/research, I used the fully qualified host name and the fully qualified domain name.

This could be the cause and how can I solve this problem?

Thanks in advance to anyone who answer.

Jim

Ask in the forum Windows Server:
http://social.technet.Microsoft.com/forums/en-us/category/WindowsServer

Tags: Windows

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