Comment 8 for bug 1398625

Reviewed: https://review.opencontrail.org/8343
Committed: http://github.org/Juniper/contrail-vrouter/commit/c387561eb84007cbf6b497720987ab3a45beec2e
Submitter: Zuul
Branch: master

commit c387561eb84007cbf6b497720987ab3a45beec2e
Author: Ganesan Prabhakaran <email address hidden>
Date: Fri Mar 13 16:12:11 2015 -0700

The following changes are made to support flow-lookup for IPv6.
1. Change vr_flow Sandesh message to include family (AF_INET/AF_INET6) and <list> for IP addresses (instead of uint32 for SrcIP and DstIP). The list of IP address will pack both SrcIP and Dst IP (8 bytes for IPv4 and 32 bytes for IPv6, identified by the family field .
2. Defined a 'union' to describe how the flow entry looks for V4 and V6.
3. Added flow_key data structure for V6 addresses. Changed order of fields in flow_key (moved IP addresses to the end), added #defines to access generic/V4/V6 fileds in the flow_key
4. Updated hash/lookup logic to use different key size based on key_family.
5. Other related changes in dp-core and utils

Change-Id: I0147c54b8e5a8f5a046a097a39581c899fa6f972
Closes-bug: 1398625