CARP IP - Both nodes show as Master

[KKIT]

When creating a new network, both nodes show as "Master" in the CARP Status. Modifying the network and/or changing the VHID Group doesn't help. All other networks switch as usual.

The two Netgates are connected via Fiber to each other and I can ping the other Device from the Sync Interface from both directions.

Firewall settings are set to "any" on the affected interface as well as the Sync interface, if that matters.

I also sometimes get the "Reset CARP Demotion Status" when turning CARP off on the second (Backup) node.

Both nodes are on 21.05.2-RELEASE.
Model: XG-7100

[KKIT]

Update: When looking at the logfiles, I get the error
Dec 15 02:36:02 kernel carp: 91@ix0.91: BACKUP -> MASTER (master timed out)

But all VLANs do run through the same LAN interface. How can this be?

[netblues]

@kkit Are you using a vlan for the sync interface?
Try using an direct cable if possible.
Most probably the switch in between does things on carp traffic.

[KKIT]

@netblues Hey netblues, thank you very much, after carefully scrolling through the VLAN config on the swtich, it appears that I did not commit my settings, after rebooting both the switch and netgates, the issue disappeared.

kind regards
kkit