Re-add default gateway after moving IP to macvlan subinterface
Re-add default gateway after moving IP to macvlan subinterface

Save some head scratching for others that go down this path.

SivagnanamCiena/pipework,palfrey/pipework,snowygoose/pipework,haggaie/pipework,zhouqingyu/pipework,OnePaaS/pipework,abn/pipework,wrenth04/pipework,ksmaheshkumar/pipework,Rakurai/pipework,bing6/pipework,hayderimran7/pipework,awanke/pipework,YujiOshima/pipework,helloIAmPau/pipework,mirzawaqasahmed/pipework,mrvicadai/pipework,jpetazzo/pipework,JamesGuthrie/pipework,hustcat/pipework,pierrecdn/pipework,mej/pipework,ONode/pipework,spheresh/pipework,osrg/pipework,indykish/pipework,sharry007/pipework,midonet/pipework,deitch/pipework,Altiscale/pipework,PeerXu/pipework