From: David Miller <davem@davemloft.net>
To: simon@fire.lp0.eu
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: sockets affected by IPsec always block (2.6.23)
Date: Tue, 04 Dec 2007 22:06:34 -0800 (PST) [thread overview]
Message-ID: <20071204.220634.112782343.davem@davemloft.net> (raw)
In-Reply-To: <4755A21F.2020407@simon.arlott.org.uk>
From: Simon Arlott <simon@fire.lp0.eu>
Date: Tue, 04 Dec 2007 18:53:19 +0000
> If I have a IPsec rule like:
> spdadd 192.168.7.8 1.2.3.4 any -P out ipsec esp/transport//require;
> (i.e. a remote host 1.2.3.4 which will not respond)
>
> Then any attempt to communicate with 1.2.3.4 will block, even when using non-blocking sockets:
If you don't like this behavior:
echo "1" >/proc/sys/net/core/xfrm_larval_drop
but those initial connection setup packets will be dropped while
waiting for the IPSEC route to be resolved, and in your 8 hour case
the TCP connect will fail.
Anyways, the choice for different behavior is there, select it
to suit your tastes.
prev parent reply other threads:[~2007-12-05 6:06 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-04 18:53 sockets affected by IPsec always block (2.6.23) Simon Arlott
2007-12-05 0:12 ` Herbert Xu
2007-12-05 6:30 ` David Miller
2007-12-05 6:51 ` Herbert Xu
2007-12-05 7:12 ` David Miller
2007-12-05 7:16 ` Herbert Xu
2007-12-05 7:34 ` David Miller
2007-12-05 7:39 ` Herbert Xu
2007-12-05 9:55 ` David Miller
2007-12-05 9:57 ` Herbert Xu
2007-12-05 18:42 ` Stefan Rompf
2007-12-05 18:39 ` Stefan Rompf
2007-12-06 2:25 ` David Miller
2007-12-06 8:49 ` Stefan Rompf
2007-12-06 8:53 ` David Miller
2007-12-06 10:56 ` Stefan Rompf
2007-12-06 11:13 ` David Miller
2007-12-06 11:35 ` Stefan Rompf
2007-12-06 11:39 ` David Miller
2007-12-06 12:30 ` Stefan Rompf
2007-12-06 13:55 ` David Miller
2007-12-06 14:31 ` Stefan Rompf
2007-12-07 3:20 ` David Miller
2007-12-07 9:29 ` Stefan Rompf
2007-12-16 22:47 ` Bill Davidsen
2007-12-16 23:22 ` David Miller
2007-12-05 6:06 ` David Miller [this message]
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=20071204.220634.112782343.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=simon@fire.lp0.eu \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox