richardlawley commented on issue #3409: RvR Services should be provided on VIP instead of VR IP URL: https://github.com/apache/cloudstack/issues/3409#issuecomment-503521176 To elaborate on the DHCP problem, this is related to #3351. The VMs we've found most affected by this are Linux machines with a secondary internal IP. Their primary IP comes from DHCP, but the secondaries are all statically configured. If the DHCP lease is renewed, no problem occurs. However, if a renew fails and a re-discover takes place, the statically configured secondary IPs are all removed along with the DHCP primary, and not restored when the new lease is acquired. There are two causes of this: 1. DHCP server not being available on the IP it was (e.g. VR failover or rebuild) 2. DHCP server not being aware of the previous lease. Problem 2 was addressed in #3351, but without running the DHCP server on the VIP, problem 1 still exists. We are working around this until this issue is resolved by going back to infinite leases in our custom ISO.
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