SSH login takes very long time...sometimes

James Tanis jtanis at
Fri Dec 23 09:46:00 PST 2005

For whatever reason, I have had a similar problem which was solved by
entering the machines that you are logging in from into the hosts
file. I'm guessing it attempts a reverse lookup and your (as well as
my) dns/hostname does not match its reverse lookup entry.

On 12/23/05, Michael A. Koerber <mak at> wrote:
> All,
>   I have three machines that have had 5.4 and 6.0 installed.  Two of the three machines have very
> well behaved "ssh".  However, the machine (laptop) named OBOE does not.
>   Specifically "ssh oboe" will (most of the time) hang for around one minute before asking for a
> prompt.  However, if I'm logged into OBOE and "ssh BSD" (one of the other machines) a password is
> requested within a couple seconds.  (I said most of the time, since on occasion I can reboot OBOE
> and ssh will work just fine...hmmm.)
>   I have looked through the /var/log files for clues and skimmed "man ssh" for time out related
> stuff, but no luck.
>   Where should I start looking for clues?
>   All machines have had clean installs from "newfs'd" drive under both 5.4 and 6.0 so I'm sure no
> left over configs are getting propagated.
> --
> ---------------------
> Dr Michael A. Koerber
> x3250
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James Tanis
jtanis at

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