From: Florian Westphal <fw@strlen.de>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: Florian Westphal <fw@strlen.de>, David Ahern <dsahern@gmail.com>,
netdev@vger.kernel.org, aconole@redhat.com
Subject: Re: [PATCH net-next 1/3] udp_tunnel: allow to turn off path mtu discovery on encap sockets
Date: Wed, 15 Jul 2020 14:42:58 +0200 [thread overview]
Message-ID: <20200715124258.GP32005@breakpoint.cc> (raw)
In-Reply-To: <20200714143327.2d5b8581@redhat.com>
Stefano Brivio <sbrivio@redhat.com> wrote:
> I would still like the idea I proposed better (updating MTUs down the
> chain), it's simpler and we don't have to duplicate existing
> functionality (generating additional ICMP messages).
It doesn't make this work though.
With your skeleton patch, br0 updates MTU, but the sender still
won't know that unless input traffic to br0 is routed (or locally
generated).
Furthermore, such MTU reduction would require a mechanism to
auto-reconfig every device in the same linklevel broadcast domain,
and I am not aware of any such mechanism.
next prev parent reply other threads:[~2020-07-15 12:43 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-12 20:07 [PATCH net-next 0/3] vxlan, geneve: allow to turn off PMTU updates on encap socket Florian Westphal
2020-07-12 20:07 ` [PATCH net-next 1/3] udp_tunnel: allow to turn off path mtu discovery on encap sockets Florian Westphal
2020-07-12 22:38 ` Stefano Brivio
2020-07-13 8:04 ` Florian Westphal
2020-07-13 10:04 ` Stefano Brivio
2020-07-13 10:51 ` Numan Siddique
2020-07-14 20:38 ` Aaron Conole
2020-07-15 11:58 ` Stefano Brivio
2020-07-13 13:25 ` David Ahern
2020-07-13 14:02 ` Florian Westphal
2020-07-13 14:41 ` David Ahern
2020-07-13 14:59 ` Florian Westphal
2020-07-13 15:57 ` Stefano Brivio
2020-07-13 16:22 ` Florian Westphal
2020-07-14 12:33 ` Stefano Brivio
2020-07-14 12:33 ` Stefano Brivio
2020-07-15 12:42 ` Florian Westphal [this message]
2020-07-15 13:35 ` Stefano Brivio
2020-07-15 14:33 ` Florian Westphal
2020-07-17 12:27 ` Stefano Brivio
2020-07-17 15:04 ` David Ahern
2020-07-17 18:43 ` Florian Westphal
2020-07-18 6:56 ` Stefano Brivio
2020-07-18 17:02 ` David Ahern
2020-07-18 17:58 ` Stefano Brivio
2020-07-18 18:04 ` Stefano Brivio
2020-07-19 18:43 ` David Ahern
2020-07-19 21:49 ` Stefano Brivio
2020-07-20 3:19 ` David Ahern
2020-07-26 17:01 ` Stefano Brivio
2020-07-12 20:07 ` [PATCH net-next 2/3] vxlan: allow to disable path mtu learning on encap socket Florian Westphal
2020-07-16 19:33 ` Jakub Kicinski
2020-07-17 10:13 ` Florian Westphal
2020-07-12 20:07 ` [PATCH net-next 3/3] geneve: allow disabling of pmtu detection on encap sk Florian Westphal
2020-07-12 22:39 ` [PATCH net-next 0/3] vxlan, geneve: allow to turn off PMTU updates on encap socket Stefano Brivio
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