Asymmetric routing with FreeBSD on Amazon EC2 within VPC

Patrick Gibson gibblertron at
Tue May 19 19:22:13 UTC 2015

I'm wondering if anyone has managed to figure out a way to have an
Amazon EC2 instance behind a VPC work with multiple public IP
addresses? The issue is with asymmetric routing. It's been resolved in
the Linux world
but I can't seem to get it working under FreeBSD. Using the setfib
command, I'm able to manually go out through either interface, but for
incoming packets to a webserver that listens to both interfaces, no
dice. :(


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