Hey all, I know this is slightly off-topic on this list, I'm hoping the OpenBSD answer will be "close enough" to the MacOS X (10.8) answer that I'll get what I need done. I have gotten zero replies from the Apple communities, so I'm asking here. That said, here's what I'm trying to accomplish.
This server has 5 VLAN tagged interfaces (already set up and reachable). First one holds the default route (used for administration). Ostinato (traffic generator) is installed. The other 4 VLAN interfaces are to be used for traffic generation/receiving. What I want is for traffic sourced (via Ostinato) from a particular IP address to be sent via it's own VLAN interface to it's own router. I have accomplished this on Linux (the far end of this test) using: ip route add default via <gateway-X> dev ethX table X ip rule add from <network-X> table X priority X Research online suggests that this used to work before ipfw was deprecated: ipfw add X fwd <gateway-X> ip from <IP-address-X> to any (I did try this, and nothing actually happened.) Further searching led me to this as the possible OpenBSD answer: route -T X add 0.0.0.0/0 -iface <gateway-X> echo pass in from <network-X> to 0.0.0.0/0 rtable X | pfctl -mf - However, this particular version of the OS does not support the -T option to route, so I presume that multiple tables are not supported. However, that step may be not needed. Reading the pfctl man page made my brain hurt. :-) It seems a very functional utility and able to do many, many things, but it's so far away from things I have used in the past (mostly Linux) that the learning curve seems steep. I'm thinking maybe the extra routing table is not strictly necessary in this application, and that pfctl (which in this case is directly from OpenBSD) might be able to do exactly what I want it to do by itself. To that end, I'm hoping someone could give me some hints on the syntax I need to feed it to make this work. Thanks in advance! I appreciate any and all suggestions. Aaron
