On May 27, 2015, at 3:10 PM, Mindaugas Rasiukevicius wrote: > Indeed, the traffic looks asymmetric. The packet filters (not only NPF) > see the outgoing packets on the physical interface. It is reset here: > > http://nxr.netbsd.org/xref/src/sys/net/if_ethersubr.c?r=1.209#222
Would this also cause routing loops? I had tried setting up a router with a carp interface and ran into all sorts of routing issues. I was not entirely confident that I had it configured correctly, but now I suspect the problems might have been because packets were being given different addresses than I expected and thereby confusing the rest of the network. Is that a possible outcome of the way the network stack currently handles carp interfaces? Cheers, Brook