Hyper-V slow failover on CARP



  • I have pfSense running on 2 hyperv boxes with a "WAN" NIC and a "LAN" nic each. They can ping each other on both subnets without issue. I have CARP running on the WAN interface with the LAN setup for the state table sync interface.

    If I shut down the master it takes up to 5 minutes for the IP to become active again, which is much slower than my test lab running on VirtualBox.

    Clearing out the ARP cache on my router doesn't resolve the issue and I have confirmed that "Enable MAC address spoofing" is enabled on all NICs.

    Does anyone have a suggestion on what else I can check?

    Thank you.


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