[Bug 229384] Can't remove address from carp

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229384

--- Comment #3 from Kajetan Staszkiewicz <vegeta at tuxpowered.net> ---
Maybe I did not made myself clear. Carp is set up correctly and operates
flawlessly until multiple addresses are added and removed in a short period of
time during some testes which are run on those routers. Rebooting routers and
having them configure the addresses once by just adding them after reboot makes
things work fine again. The master/master behaviour is consistent with checksum
issues, that is when there are different carp addresses configured on each
router even when ifconfig shows identical addresses. A few times I was able to
observe different addresses shown by ifconfig but I was unable to delete extra
addresses due to errors as show here before.

Long story short: only stress-testing by adding and removing carp addresses
breaks carp.

And no, it is not necessary to provide any other parameters when carp vhid is
already configured. Each extra IP address can be added to existing vhid by just
specifying vhid.

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