From: ppetru@ppetru.net (Petru Paler)
To: linux-kernel@vger.kernel.org
Subject: Getting destination address for UDP packets
Date: Fri, 20 Jul 2001 14:55:44 -0700 [thread overview]
Message-ID: <20010720145544.D1267@ppetru.net> (raw)
Hi,
I'm working on a program which binds on all the available interfaces (0.0.0.0)
and listens for/replies with UDP packets.
The problem is that I need to send back responses from the same IP address that
the query arrived to, and this is not usually happening.
Example: supposing I have 1.1.1.2 and 1.1.1.3 aliased on the same interface, and
a query arrives on 1.1.1.3, it's mandatory that the reply packet goes out from
1.1.1.3.
The question is: how do I get (from user space, if possible) the destination
IP address of an UDP packet?
Thanks
Petru
next reply other threads:[~2001-07-20 21:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-20 21:55 Petru Paler [this message]
2001-07-20 22:30 ` Getting destination address for UDP packets David Schwartz
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=20010720145544.D1267@ppetru.net \
--to=ppetru@ppetru.net \
--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