Mgmt network ping test fails.....

I have 2 esxi 5 U2 hosts just spun up. I set the management IP & DNS etc...

So when I go to do the "Test Management Network" thing from the console, the ping test for pinging the DNS name fails. The rest (DNS Servers & Router) work.

Now when I putty into the the host I can ping itself.....of course. I can ping all IP's.

Nest I added the entries to the hosts file.....

192.168.0.100     servername.somethin.net servername

Usually works but not this time.

Niether the short name or the FQDN works.

Anyone have any ideas?

Thanks