From: "Eugene B. Berdnikov" <bd4@protva.ru>
To: netdev@vger.kernel.org
Subject: Path MTU discovery and tuntap
Date: Tue, 22 Nov 2011 00:33:59 +0400 [thread overview]
Message-ID: <20111121203359.GE2640@sie.protva.ru> (raw)
Hi folks.
I have two routers running a tun-based tunneling applications.
Both forward packets from eth (mtu=1500) to tun (mtu=1300),
emitting icmp[frag-need] if DF=1 and packet size > 1300. That's nice.
But one router simply drops oversized packet after icmp emittion,
and other one delivers oversized packet to application's tun.
The difference is that 1st router runs 2.6.30 (it drops packet) and
the 2nd runs 3.0.0 (delivers to app). Kernels are from Debian/testing.
The question is: was it an intentional change or some bug?
--
Eugene Berdnikov
reply other threads:[~2011-11-21 21:22 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20111121203359.GE2640@sie.protva.ru \
--to=bd4@protva.ru \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.