Under all versions of Solaris, except 8, when you ifconfig your loopback
address (lo0) with an IP address of some other host that host won't be able to
ping or make any network connections to the server. That's obvious because the
ip address is now local to the machine and everything just breaks for that
HOST = 10.20.20.200/24
Some router in between to connect each other.
Server = 10.2.0.2/24
Then you "ifconfig lo0:1 10.20.20.200 netmask 255.255.255.255 up" and the host
cannot talk to the server anymore.
In the Solaris 8 environment, even patched up with xref file 2/28/01, when you
do an "ifconfig lo0 addif 10.20.20.200 netmask 255.255.255.255 up" or "ifconfig
lo0:1 plumb ; ifconfig lo0:1 10.20.20.200 netmask 255.255.255.255 up" the host
is still able to talk with the server. If you wait like 2 hours, sometimes the
host will not be able to ping/talk to the server until you unplumb lo0:1 then
traffic will start right away.
Has anyone else seen this? Is this an "added feature" in solaris 8? Any
suggestions to make it work like previous versions of Solaris. Well for that
matter make it would like is should. :)