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From: David Ahern <dsahern@gmail.com>
To: mastertheknife <mastertheknife@gmail.com>, netdev@vger.kernel.org
Subject: Re: PMTUD broken inside network namespace with multipath routing
Date: Mon, 3 Aug 2020 07:32:48 -0600	[thread overview]
Message-ID: <c508eeba-c62d-e4d9-98e2-333c76c90161@gmail.com> (raw)
In-Reply-To: <CANXY5y+iuzMg+4UdkPJW_Efun30KAPL1+h2S7HeSPp4zOrVC7g@mail.gmail.com>

On 8/3/20 5:14 AM, mastertheknife wrote:
> What seems to be happening, is that when multipath routing is used
> inside LXC (or any network namespace), the kernel doesn't generate a
> routing exception to force the lower MTU.
> I believe this is a bug inside the kernel.
> 

Known problem. Original message can take path 1 and ICMP message can
path 2. The exception is then created on the wrong path.

  reply	other threads:[~2020-08-03 13:32 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-03 11:14 mastertheknife
2020-08-03 13:32 ` David Ahern [this message]
2020-08-03 14:24   ` mastertheknife
2020-08-03 15:38     ` David Ahern
2020-08-03 18:39       ` mastertheknife
2020-08-10 22:13         ` David Ahern
2020-08-12 12:37           ` mastertheknife
2020-08-12 19:21             ` David Ahern
2020-08-14  7:08               ` mastertheknife
2020-09-01 10:40                 ` mastertheknife
2020-09-01 10:44                   ` mastertheknife
2020-09-02  0:42                   ` David Ahern

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