On 12/02/2013 18:38, Eggert, Lars wrote: > This sounds like your default route is going via igb2.
Yes, it is. > You can make this work with ipfw rules (and I guess also setfib, although I > have not tried that.) The concept of FIBs looks clean and applicable but setfib works on newly started process, and I would need to do something like apply it to packets coming from an interface. I've found previous posts on "policy routing" with ipfw (http://lists.freebsd.org/pipermail/freebsd-security/2004-April/001839.html) but this is probably not what I need; I would need that packets generated as a response to incoming packets go to the same interface as the incoming packet. Or are you thinking of hard-coding client addresses in ipfw rules so that packets going to specific IPs go to a specific interface?
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