[SOLVED] Ping returning strange hostname

[tlitterio]

I have a RedHat server running Nagios. When i ping one of the Windows hosts on our LAN it resolves the wrong name?

I run the following:
[root<at>localhost /]# ping hostA.domain.com

it returns:

PING hostA.geneva-trading.com (192.168.105.49) 56(84) bytes of data.
64 bytes from hostB.geneva-trading.com (192.168.105.49): icmp_seq=1 ttl=127 time=0.197 ms
64 bytes from hostB.geneva-trading.com (192.168.105.49): icmp_seq=2 ttl=127 time=0.187 ms
64 bytes from hostB.geneva-trading.com (192.168.105.49): icmp_seq=3 ttl=127 time=0.209 ms

??? Why does it return hostB??? It seems to resolve all other hosts I have tried OK. I looked at the Arp, Hosts file and double checked the resolv.conf; everything looks great! I don't get it... Is there another location where resolvers are stored?

Thanks!
Tony

[atreyu]

Hello and welcome!

I am guessing that it is a DNS record, either misconfigured or by design. Are you using an internal DNS server?

In any case, try this:

nslookup 192.168.105.49

You should get a list of authoritative and non-authoritative DNS names for that ip address.

[tlitterio]

WTH! It return the hostB name!!! I don't get it, I am looking at the DNS manager on theserver it used to resolve the name and that is the wrong hostname... Very strange...

[tlitterio]

Ah! It's the reverse record! Any idea how to change that? Can I delete it?

[atreyu]

Ah! It's the reverse record! Any idea how to change that? Can I delete it?

Possibly, provided that you are the admin of the DNS server. What kind of DNS server is it?

[tlitterio]

It is a Microsoft DNS server, internal. I deleted it. I actually turned on DNS scavenging a number of months back for the forward lookup... Didn't realize it needed to be enabled for reverse separately... All seems to be well now. Thanks!

[atreyu]

Excellent, glad you got it sorted.

Will mark this thread as Solved for you.