ssh connections through LVS-DR are being dropped.

[gholder@xxxxxxxxxxxxx]

We have LVS director configured to distrube ssh connections to ssh real servers.
Connections from linux machines work great.  Ssh connections from either Solaris
machines (even using openssh) or from Windows machines (using either ssh's ssh
client, or putty) are dropped after about 5 minutes.

Any hints or suggestions are welcome.

Thanks,
-Gaylord

We're running Mandrake 9.1 (kernel 2.4.21) with ipvsadm-1.21.

The director's ipvsadm rules are:
-A -t tux.cs.drexel.edu:ssh -s rr
-a -t tux.cs.drexel.edu:ssh -r ws38 -g -w 1
-a -t tux.cs.drexel.edu:ssh -r ws43 -g -w 1

For the real servers:
sysctl parameters are:
net.ipv4.ip_forward = 1
net.ipv4.conf.all.hidden=1
net.ipv4.conf.lo.hidden=1

The real servers have a loop back interface configured with the tux's address:

lo:0      Link encap:Local Loopback  
          inet addr:129.25.8.226  Mask:255.255.255.255
          UP LOOPBACK RUNNING  MTU:16436  Metric:1