Juniper Openstack

  1. Bug #1491644
  2. Comment #28

Comment 28 for bug 1491644

Revision history for this message
OpenContrail Admin (ci-admin-f) wrote : A change has been merged

Reviewed: https://review.opencontrail.org/17481
Committed: http://github.org/Juniper/contrail-vrouter/commit/737a135f6cd3fc2638ed4b5fe2039534a5d4f553
Submitter: Zuul
Branch: R2.20

commit 737a135f6cd3fc2638ed4b5fe2039534a5d4f553
Author: Divakar <email address hidden>
Date: Tue Sep 22 21:59:40 2015 +0530

Replyin to ARP request of ECMP source only if VM is hosted

When an ARP request is received on compute node on fabric interface from
an ECMP source, ARP response is sent with Vhost mac even though the ARP
request is not meant for any VM on that compute node. Because of this,
even if BMS pings another BMS, every compute node receiving this ARP
request is responding with Vhost mac leading to ARP cache poisoning in
BMS.

As a fix, only if ARP request is meant for a VM on compute node, the
response is sent with Vhost mac.

Change-Id: Iae8541c8404d6e6ce530f994b64b03dc0cd73170
closes-bug: #1491644