Re: Debian 13 - Dosent adjust MTU on IPv6
On 17.11.2025 14:10 Uhr Kenneth wrote:
> Im just trying to configure my network, which is with multople
> routers running OpenWRT 24.10.3.
> I use B.A.T.M.A.N. on this, so the MTU is set to 1468, and the
> routers do send RAs, but my devices running Debian 13.x does not seem
> to change their MTU to 1468.
For IPv6, path MTU discovery is mandatory. Unless you disable sending
ICMP messages or block them using a firewall, it will work fine.
Use tracepath to test it.
--
kind regards
Marco
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