hi ed  i have torn down my build system  but i manually re created ext gw with what the script will have generated lo loopback up lower up  mtu qdisc noqueue state unknown link loopback brd inet scope host lo valid lft forever preferred lft forever inet scope host valid lft forever preferred lft forever em  broadcast multicast up lower up  mtu qdisc mq state up qlen link ether e  d c a  brd ff ff ff ff ff ff inet brd scope global em  valid lft forever preferred lft forever inet  fe ae  d ff fe ca scope link valid lft forever preferred lft forever em  broadcast multicast  mtu qdisc noop state down qlen link ether e  d c a  brd ff ff ff ff ff ff em  broadcast multicast  mtu qdisc noop state down qlen link ether e  d c ae brd ff ff ff ff ff ff ovs system broadcast multicast  mtu qdisc noop state down link ether a c brd ff ff ff ff ff ff ext gw broadcast up lower up  mtu qdisc noqueue state unknown link ether  a  f ea brd ff ff ff ff ff ff inet scope global ext gw valid lft forever preferred lft forever inet  fe f  ff fe ea scope link valid lft forever preferred lft forever brbm broadcast up lower up  mtu qdisc noqueue state unknown link ether  e a  f brd ff ff ff ff ff ff inet  fe e  f fee e scope link valid lft forever preferred lft forever virbr  no carrier broadcast multicast up  mtu qdisc noqueue state down link ether  e e b brd ff ff ff ff ff ff inet brd scope global virbr  valid lft forever preferred lft forever netstat  rn  kernel ip routing table  destination gateway genmask flags mss window irtt iface ug em u em u virbr u ext gw