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Date:      Sun, 13 Feb 2022 05:34:41 +0100
From:      Thomas Steen Rasmussen <thomas@gibfest.dk>
To:        Andrea Venturoli <ml@netfence.it>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Some strangeness with CARP
Message-ID:  <13ac2230-2851-fcd0-4661-34074c57c0e5@gibfest.dk>
In-Reply-To: <594e3d18-9645-3b3f-7a41-87c586fb93ad@netfence.it>
References:  <594e3d18-9645-3b3f-7a41-87c586fb93ad@netfence.it>

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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,

Thomas



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