CARP master election changed in 11.0 ?

[Robert Blayzor]

Did something change between 10.x and 11.0 with carp MASTER election and advskew? 

I have several 10.3 servers where the master is elected based on the member with the LOWEST advskew.

From a pair of 10.3 servers:

	vlan: 100 parent interface: lagg0
	carp: MASTER vhid 10 advbase 1 advskew 100

	vlan: 100 parent interface: lagg0
	carp: BACKUP vhid 10 advbase 1 advskew 110


Deploying a new pair of 11.0-RELEASE servers, I see the opposite; seems like the member with the HIGHEST advskew wins now:


        carp: BACKUP vhid 20 advbase 1 advskew 0
	groups: lagg

	carp: MASTER vhid 20 advbase 1 advskew 100
	groups: lagg



Preemption doesn’t seem to matter, even with preemption enabled. (which it is).

From OpenBSD, man reads:

advskew
This optional parameter specifies how much to skew the advbase when sending CARP advertisements. By manipulating advskew, the master CARP host can be chosen. The higher the number, the less preferred the host will be when choosing a master. The default is 0. Acceptable values are from 0 to 254.


And this seems true in 10.3 but reversed in 11.0 ?

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