4.11.2 HA VRs with Second Public NIC do not get constant MAC

[richardlawley]

ISSUE TYPE

• Bug Report

COMPONENT NAME

VRs

CLOUDSTACK VERSION

4.11.2

CONFIGURATION

XenServer 6.5, Advanced Networking

OS / ENVIRONMENT

N/A

SUMMARY

When an advanced network has multiple public interfaces, the second (and subsequent) interfaces do not have the same MAC address on both VRs. This means that after a failover, connectivity with the IPs on the second+ ranges is interrupted until the ARP entry times out.

STEPS TO REPRODUCE

1. Create zone with 2 or more public IP ranges
2. Create an advanced network, allocate IPs until you get IPs from both networks (or use the database to assign a specific IP)
3. Create a VM and assign a Static NAT IP to the IP from the second range
4. Log into both VRs, compare the MAC addresses of eth2 and eth3 on both VRs

EXPECTED RESULTS

MAC addresses for eth3 should be the same on both VRs

ACTUAL RESULTS

MAC addresses for eth3 are different.

[richardlawley]

The additional public NICs do not seem to have a database entry - I was hoping to be able to adjust it as a short-term fix.

[richardlawley]

My workaround for now is to send garp messages when transitioning to master (e1c96c1) but it would be better if the MAC address was constant, like for eth2.

[yadvr]

Future note: explore a way to make the mac address constant.