Comment 4 for bug 1511237

Reviewed: https://review.opencontrail.org/14883
Committed: http://github.org/Juniper/contrail-vrouter/commit/c2e31f8357075e32ae2b0acfb51daecb4054ba04
Submitter: Zuul
Branch: R2.20

commit c2e31f8357075e32ae2b0acfb51daecb4054ba04
Author: Divakar <email address hidden>
Date: Thu Nov 5 11:20:56 2015 +0530

Mirroring the GARP packes rather trapping

When the Agent puts the Trap flag in L3 route it expects the Garp
packets to be trapped to it. As of now, the packet is only getting
Trapped and not getting flooded when this flag is seen. As such, Garp
packet always need to be flooded irrespective of the Trap flag.

To fix this, when the Trap flag is seen in the L3 route, a copuy of Garp
packet is given to VM and original copy is flooded as well.

Change-Id: I586385e157cd221bfa21d879b7601ebfa00cd5c8
closes-bug: #1511237