Specifying a source for the multipath route solved the problem.> ip rule add priority 200 table multishould be ip rule add prio 200 from $INT_NET table multi> ip route add default table multi proto static \ > nexthop via $EXB_GW dev $EXB_IF weight 1 \ > nexthop via $EXA_GW dev $EXA_IF weight 1g