Comment 6 for bug 1687862

Reviewed: https://review.opencontrail.org/31382
Committed: http://github.com/Juniper/contrail-vrouter/commit/a25ff05d30ad5b60ae0a98a6ef13919ff8a6f0b1
Submitter: Zuul (<email address hidden>)
Branch: R4.0

commit a25ff05d30ad5b60ae0a98a6ef13919ff8a6f0b1
Author: Anand H. Krishnan <email address hidden>
Date: Sun May 7 08:39:39 2017 +0530

Copy the mirror vlan to parent fmd

. without copying the mirror vlan to parent fmd, no tag insertion
will happen. Hence, copy the mirror vlan to parent fmd.

. for the first packet than generates a flow (and thus held), save
and restore the mirror vlan to and from the packet node.

. while transmitting the tunneled packet out, get to the outermost
IP header after taking into account vlan headers that are present
in the packet

Change-Id: I23ab21afc31b4aae74af3f8ff80720df1a36d703
Closes-Bug: #1687862