Did you ever find a solution to this? I have two 3240s that are brand-new installs that I am seeing a similar problem with. One head works fine, and the second head is giving me the "Network is unreachable" error. Yet, I can ping/traceroute to it:
appnas-b> options autosupport
autosupport.mailhost mailhost.my.domain (value might be overwritten in takeover)
autosupport.support.transport smtp (value might be overwritten in takeover)
appnas-b> ping mailhost.my.domain
mailhost.my.domain is alive
appnas-b> traceroute mailhost.my.domain
traceroute to mailhost.my.domain (1.2.3.4), 30 hops max, 40 byte packets
1 appmail.uen.org (1.2.3.4) 1.000 ms 1.000 ms 0.000 ms
appnas-b>
I don't have a host set up where I can snoop to see if the mail is trying to be sent out the wrong interface, but given that the autosupport and ifconfig on both boxes are identical....well, I'm confused. Any help would be very much appreciated.
-c