From: "Mantas M." <grawity@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: "martian source" mixes up source and destination
Date: Sat, 28 Apr 2012 20:37:57 +0300 [thread overview]
Message-ID: <jnh9tl$rth$1@dough.gmane.org> (raw)
After enabling the /proc/sys/net/ipv4/conf/all/log_martians sysctl, I've
been receiving the following messages on dmesg:
> martian source 255.255.255.255 from 192.168.1.115, on dev wlan0
> ll header: ff:ff:ff:ff:ff:ff:f4:6d:04:85:fc:d7:08:00
> martian source 192.168.1.255 from 192.168.1.115, on dev wlan0
> ll header: ff:ff:ff:ff:ff:ff:f4:6d:04:85:fc:d7:08:00
> martian source 192.168.1.255 from 192.168.1.115, on dev wlan0
> ll header: ff:ff:ff:ff:ff:ff:f4:6d:04:85:fc:d7:08:00
> <later>
> martian source 255.255.255.255 from 192.168.1.183, on dev eth0
> ll header: ff:ff:ff:ff:ff:ff:48:5d:60:e8:65:8f:08:00
However, the packets are *not* martians, but legitimate broadcast
UDP/IPv4 packets: they have the *destination* as 255.255.255.255 or
192.168.1.255, with the source being 192.168.1.115 (wlan0 on this
device) for the first three packets, and 192.168.1.183 (eth0) on the
fourth.
Linux 3.3.4-1-ARCH on Arch Linux
--
Mantas M. <grawity@gmail.com>
next reply other threads:[~2012-04-28 17:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-28 17:37 Mantas M. [this message]
2012-04-29 4:52 ` "martian source" mixes up source and destination Michael Tokarev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='jnh9tl$rth$1@dough.gmane.org' \
--to=grawity@gmail.com \
--cc=linux-kernel@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox