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Date: Wed, 19 Feb 1997 19:40:43 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
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Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: Charles Henrich <henrich@crh.cl.msu.edu>
cc: freebsd-questions@freebsd.org
Subject: Re: Whats this? (in last/wtmp)
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On Wed, 19 Feb 1997, Charles Henrich wrote:

> > On Wed, 19 Feb 1997, Charles Henrich wrote:
> >
> > > When this user logs in it says "invalid hostname" for where he is from, logs
> 
> > > that as such in the wtmp.  What is causing this?  Anyone?
> > >
> > > faisal    ttyp1    invalid hostname Wed Feb 19 12:12 - 12:14  (00:02)
> >
> > Nameserver lookup problems?
> 
> Then it should put the IP in the file right?

Then perhaps it's not getting the IP -- a intervening machine is stomping
on the tcp_extensions perhaps?  Or the data returned from the nameserver
is invalid?  

You might look at the login source and see where the text is emitted.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major