10 second delay in login

Ok, it is now time to ask for help!!

   I have been experiencing a 10 second delay on using ssh (and rsh)
to a host.   m2 is on a private network behind m1 and so I've enabled
rsh.   But with both rsh and ssh I get the following (script below) where
several times I get a sub 1 second real time to execute a command like
date on the remote machine, but every 4th or 5th time this command is
run I get  a 10 second delay.  (See the 4th one below.)   It happens the
same way with either ssh or rsh.     I've tried with home both on a local
disk and on a NFS mounted home and both act the same.   All host
names are in /etc/hosts.

Does anyone have any help ???

--Phil

m1[510]$ while true ; do time ssh -x m2 date ; done
Wed Feb 20 23:23:41 PST 2008

real    0m0.767s
user    0m0.029s
sys     0m0.000s
Wed Feb 20 23:23:41 PST 2008

real    0m0.764s
user    0m0.031s
sys     0m0.000s
Wed Feb 20 23:23:42 PST 2008

real    0m0.758s
user    0m0.014s
sys     0m0.015s
Wed Feb 20 23:23:53 PST 2008

real    0m10.806s
user    0m0.029s
sys     0m0.000s
Wed Feb 20 23:24:04 PST 2008

real    0m10.788s
user    0m0.010s
sys     0m0.019s
Wed Feb 20 23:24:05 PST 2008

real    0m0.766s
user    0m0.000s
sys     0m0.029s
Wed Feb 20 23:24:05 PST 2008

real    0m0.771s
user    0m0.000s
sys     0m0.029s
Wed Feb 20 23:24:06 PST 2008

real    0m0.768s
user    0m0.029s
sys     0m0.000s

-- 
Phil Nelson (phil at cs.wwu.edu) http://www.cs.wwu.edu/nelson
NetBSD: http://www.NetBSD.org  Coda: http://www.coda.cs.cmu.edu

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