Comment 15 for bug 1567586

Reviewed: https://review.opencontrail.org/22344
Committed: http://github.org/Juniper/contrail-vrouter/commit/42bd7ddcf68897f9cede4099052cf162ea396404
Submitter: Zuul
Branch: R3.1

commit 42bd7ddcf68897f9cede4099052cf162ea396404
Author: Divakar <email address hidden>
Date: Fri May 27 15:15:23 2016 +0530

Manipulating the TTL of the Packet

Right now the TTL of the packet is not overwritten by Vrouter. It is
only decremented like a hop, for the required packets. But BGP packets
in VM (due to BGP as service), can come to Vrouter to with ttl of 1. In
a multi hop environment, we require this ttl to be more than 1. For this
purpose flow entry is added with another ttl field and if Agent sets
this, vrouter unconditionally sets this ttl in the packet and calculates
the checksum again.

partial-bug: #1567586

Change-Id: I53a192666731f4c3662e3791006dd7294bccf116