Server passing IP instead of FQDN to Kerberos (during SSH GSSAPI)

Thomas Mueller thomas at
Thu Mar 12 02:09:44 EDT 2009

> When looking at the krb5kdc.log I see:
> Mar 11 22:59:09 krb5kdc[17694](info):
> TGS_REQ (7 etypes {18 17 16 23 1 3 2}) UNKNOWN_SERVER:
> authtime 1236809289,  red at COMCAST.NET for
> host/ at COMCAST.NET, Server not found in Kerberos database
> krb5kdc: Interrupted system call - while selecting for network input(1)
> It seems like the box I am trying to ssh to is sending
> Œhost/¹ instead of what I expected
> Œhost/¹.  Does anyone have any idea why
> this would be happening?  I have exact same configurations on RH5 boxes
> that will work properly and send host/FQDN... Thanks.

reverse lookup of on the host sending the ip address 
instead of the hostname shows the expected hostname?

- Thomas

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