It sounds like "ping -I" is what I was looking for, but when I use it, it seems to be sending out the packet with the right source address, but sending it to the wrong interface.....are there any tricks here?
Here's some data (edited) to show what I'm seeing: fxp0: inet 10.16.100.1 netmask 0xfffffff0 broadcast 10.16.100.15 fxp1: inet 192.168.243.152 netmask 0xffffff00 broadcast 192.168.243.255 when I try "ping -I 192.168.243.152 ucla.edu", I see the following: tcpdump -i fxp0 icmp and host ucla.edu tcpdump: listening on fxp0, link-type EN10MB 13:06:36.478450 192.168.243.152 > 128.97.27.37: icmp: echo request 13:06:37.483393 192.168.243.152 > 128.97.27.37: icmp: echo request 13:06:38.493244 192.168.243.152 > 128.97.27.37: icmp: echo request The routing table shows: 10.16.100.0/28 link#1 UC 4 0 - 4 fxp0 192.168.243/24 link#2 UC 1 0 - 4 fpx1 -- View this message in context: http://openbsd.7691.n7.nabble.com/Change-routing-tables-when-ISP-goes-down-tp256610p256624.html Sent from the openbsd user - misc mailing list archive at Nabble.com.
