upped MTU size of relay station interfaces to avoid send errors

net_run

@@ -2,6 +2,8 @@ koko -d ous,veth0,172.17.31.2/16 -d relay,veth1,172.17.31.100/24 || exit 1
 docker exec --privileged -u root ous ethtool -K veth0 tx off tso off ufo off
 docker exec --privileged -u root relay ethtool -K eth0 tso off gro off gso off
 docker exec --privileged -u root relay ethtool -K veth1 tso off gro off gso off
+docker exec --privileged -u root relay ifconfig eth0 mtu 9000
+docker exec --privileged -u root relay ifconfig veth1 mtu 9000
 docker exec --privileged -u root ous route del default gw 172.18.0.1
 docker exec --privileged -u root ous route add default gw 172.17.0.1
 docker exec --privileged -u root relay bash -c "echo 0 > /proc/sys/net/ipv4/ip_forward"