tree e2a32172eadaa35a623b71d1ae49d08fea135549
parent 1c0d5f81cfbac395ffb6c170c5927bb1163867d0
author Charles Chan <rascov@gmail.com> 1553274267 -0700
committer Charles Chan <rascov@gmail.com> 1554676399 -0700

Only iterates configured subnets to determine if a packet is destined for the switch

We should not check subnets learnt from route service. It is not only expensive but also incorrect.
This patch should significantly reduce the CPU usage when controller needs to reply ping to the gateway IP.

Change-Id: Ic245f5f136cf547cb50cabff4927da00e7f03666