Comment 9 for bug 1549761

Reviewed: https://review.opencontrail.org/18464
Committed: http://github.org/Juniper/contrail-vrouter/commit/c6fcf12d4b47416ee97fa44fd15aa4a81a005e67
Submitter: Zuul
Branch: R2.21.x

commit c6fcf12d4b47416ee97fa44fd15aa4a81a005e67
Author: Divakar <email address hidden>
Date: Fri Feb 26 11:21:58 2016 +0530

Dont mirror the same packet again

If mirroring is enabled on analyzing VM's port itself, one copy of the
original packet gets mirrored to that port. But this mirrored packet
should not be mirroed again. Right now without verifying whether the
packet is mirrored or not, it is attempted for mirroring again.

When a packet is mirrored it is marked with flag VP_FLAG_FROM_DP. If
this flag is set it is not mirrored again.

Change-Id: Ie4cca916945878b77bc4db7666992f3933db3e13
closes-bug: #1549761