Re: Some strangeness with CARP

From: Thomas Steen Rasmussen <>
Date: Sun, 13 Feb 2022 04:34:41 UTC
On 2/12/22 12:53 PM, Andrea Venturoli wrote:
> Hello.

Hello :)

> I tracked this down to the switch not learning the MAC address 
> 00:00:5e:00:01:01 (which is what CARP vhid 1 uses), so every outgoing 
> packet is broadcast to the whole network.
> Is this normal???
> Changing to any other VHID (I tried 2, 4 and 10) does not show the same 
> problem, as 00:00:5e:00:01:xx will show up in the switch MAC database.

This is absolutely not normal. VHID 1 usually acts the same as the other 
VHIDs. I also suspect your switch.

Best regards,