How to kill dead ssh login

[Grant Peel]

Hi all,

The odd time, my ISP will disconnect me which leaves me with dead remote sesssions:

57696  p0- IEs    0:00.01 tcsh -c su
57697  p0- IE+    0:00.03 _su (csh)
59069  p1  IWs    0:00.00 tcsh -c su
59070  p1  S      0:00.04 _su (csh)

constellation# w
 9:05AM  up 3 days, 18:06, 2 users, load averages: 0.05, 0.07, 0.02
USER             TTY      FROM              LOGIN@  IDLE WHAT
mefromremote            p0       xxxxxxxx.ca      8:33AM    30 _su (csh)
mefromremote            p1       xxxxxxxx.ca      8:50AM     - w

p0 is no longer connected do to a reset. How do I properly kill that session?

I have already tried killing and TERMing 57696 and 57697 to no avail.

-Grant