Comment 16 for bug 1554236

Reviewed: https://review.opencontrail.org/18391
Committed: http://github.org/Juniper/contrail-vrouter/commit/afec8642ca1a3204e219e5c4bb64ed8cc6112104
Submitter: Zuul
Branch: master

commit afec8642ca1a3204e219e5c4bb64ed8cc6112104
Author: Anand H. Krishnan <email address hidden>
Date: Mon Mar 14 12:24:49 2016 +0530

Do not swap ports for an ICMP packet inside an ICMP error

For an ICMP packet, the port numbers remain the same in either direction
i.e.: source port remains the same for both foward and the reverse flows
as does the destination port. Hence, we should not be swapping ports in
calculating the flow key while trying to tag an ICMP error packet to a
flow set up for the original stream.

Change-Id: Ic5df8aec5f1009441aefd3d177568d55f3cb0d2c
Closes-BUG: #1554236