remote logins fail with DNS error on first try, 2nd succeeds

[Hugh Caley]

Since installing F10 (clean install) my SSH and telnet logins to remote 
machines often fail with a DNS error:

hughc at joss:~$ ssh xander
ssh: Could not resolve hostname xander: Name or service not known
hughc at joss:~$

However, the 2nd attempt a couple of seconds later succeeds.  No other 
Linux or Unix machines here are having this problem.  There is nothing 
about this in /var/log/messages, or in /var/log/secure.  It doesn't 
happen all the time, either.  Not sure where to start looking for 
something like this ...

I currently have NetworkManager turned off in init, and I'm using 
/etc/init.d/network instead, just to see if that fixes the problem (it 
doesn't).

NIS is on, but host lookups do not use NIS.  From /etc/nsswitch.conf:

> hosts:      files dns

resolv.conf:

> nameserver 172.25.9.81
> nameserver 172.25.9.7
> search hq.aldon.com

Hugh

-- 
Hugh Caley, Linux Administrator
Aldon Computer Group
6001 Shellmound St. Suite 600
Emeryville, CA 94608

(510) 285-8542 | hughc at aldon.com