Hi, After more test, it looks like a change in the mpath behavior.
Is looks like the route is based on the source IP and not the dest IP as it should. Is it expected ? > Le 23 févr. 2016 à 10:54, Jean-Daniel Dupas <jddu...@xooloo.net> a écrit : > > Hello, > > I have a router configured to distribute the traffic on 2 interfaces using > equal-cost multipath > running on OpenBSD 5.7. Everything works fine, but I'd like to upgrade it to > 5.8. > > The problem is that I can't make multipath works on OpenBSD 5.8. Whatever I > do, all the traffic is directed to the first configured route. > > I have to external interface configured as follow: > >> ifconfig vio1 inet 192.168.1.3 255.255.255.0 > >> ifconfig vio2 inet 194.79.168.21 255.255.255.248 > >> sysctl -a | grep multipath > net.inet.ip.multipath=1 > > The traffic must be routed to 2 gateways: 192.168.1.1 and 194.79.168.17 > > If I add a single route, > >> route add default 192.168.1.1 > or >> route add default 194.79.168.17 > > everything works fine. The traffic is send using that route, and the net is > available. > > Now, if I add both routes using the -mpath flag, I don't see any traffic going > on the second one. > >> route add -mpath default 194.79.168.17 >> route add -mpath default 192.168.1.1 > >> route -n show > Internet: > Destination Gateway Flags Refs Use Mtu Prio Iface > default 194.79.168.17 UGSP 3 248 - 8 vio2 > default 192.168.1.1 UGSP 0 0 - 8 vio1 > 10.0/16 10.0.0.2 UC 2 0 - 8 vio0 > … > >> traceroute -n <whatever I enter> > 1 194.79.168.17 1.307 ms 1.066 ms 0.984 ms > 2 178.132.16.251 19.014 ms 18.184 ms 18.136 ms > 3 194.79.131.173 18.116 ms 18.709 ms 18.089 ms > … > > > If i set the 192.168.1.1 route before the other one, all traffic go out by > that single route. > >> route add -mpath default 192.168.1.1 >> route add -mpath default 194.79.168.17 > >> route -n show > Internet: > Destination Gateway Flags Refs Use Mtu Prio Iface > default 192.168.1.1 UGSP 0 130 - 8 vio1 > default 194.79.168.17 UGSP 2 8 - 8 vio2 > 10.0/16 10.0.0.2 UC 2 0 - 8 vio0 > >> traceroute -n <whatever I enter> > 1 192.168.1.1 0.954 ms 0.877 ms 0.724 ms > 2 80.10.115.230 16.455 ms 16.119 ms 16.55 ms > 3 10.123.204.86 16.715 ms 10.123.204.82 16.484 ms 10.123.204.86 16.692 > ms > … > > > Did someone managed to make multipath works on OpenBSD 5.8 ? > Thanks.
