silently added on 2000/01/14 as part of the IPv6 support. The default sshd
config had sshd listening both on port 22 and port 722 (this was apparently
intended to facilitate traffic-shaping in that different queueing priorities
could be assigned to ssh sessions on the two ports).
Combine two patches into one.
Submitted by: peter
db4a1e6d2d