Subject: The argument for IP_MULTICAST_IF socket option
Date: Sun, 26 Dec 2010 00:16:00 +0900
Package: manpages
Version: 3.05-1
ip(7) describes that the argument for IP_MULTICAST_IF is ip_mreqn or ip_mreq:
IP_MULTICAST_IF
Set the local device for a multicast socket. Argument is an
ip_mreqn or ip_mreq structure similar to IP_ADD_MEMBERSHIP.
But it should be ip_mreqn or in_addr.
It is different from IP_ADD_MEMBERSHIP.
At the original API of BSD multicast, IP_MULTICAST_IF takes struct in_addr.
http://www.kohala.com/start/mcast.api.txt
do_ip_setsockopt() in Linux net/ipv4/ip_sockglue.c seems to support
ip_mreqn and in_addr.
--
Tanaka Akira
Acknowledgement sent
to Simon Paillard <[email protected]>:
Extra info received and forwarded to list. Copy sent to Martin Schulze <[email protected]>.
(Sun, 27 Jan 2013 23:06:06 GMT) (full text, mbox, link).
Control: tag -1 +confirmed +upstream , retitle -1 ip(7) incorrect structure for IP_MULTICAST_IF socket option
Hi,
On Sun, Dec 26, 2010 at 12:16:00AM +0900, Tanaka Akira wrote:
> ip(7) describes that the argument for IP_MULTICAST_IF is ip_mreqn or ip_mreq:
>
> IP_MULTICAST_IF
> Set the local device for a multicast socket. Argument is an
> ip_mreqn or ip_mreq structure similar to IP_ADD_MEMBERSHIP.
>
> But it should be ip_mreqn or in_addr.
> It is different from IP_ADD_MEMBERSHIP.
>
> At the original API of BSD multicast, IP_MULTICAST_IF takes struct in_addr.
> http://www.kohala.com/start/mcast.api.txt
>
> do_ip_setsockopt() in Linux net/ipv4/ip_sockglue.c seems to support
> ip_mreqn and in_addr.
Indeed, your remark is applicable to all Linux kernels before v3.5.
Then it has been fixed in May 2012, it now accepts ip_mreqn, old ip_mreq, and in_addr
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commitdiff;h=3a084ddb4bf299a6e898a9a07c89f3917f0713f7
However, I wonder if Michael wants to document old kernel interfaces (i.e. mention in_addr).
A patch added (without mention of in_addr though).
--
Simon Paillard
Source: manpages
Source-Version: 3.54-1
We believe that the bug you reported is fixed in the latest version of
manpages, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Simon Paillard <[email protected]> (supplier of updated manpages package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
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Hash: SHA256
Format: 1.8
Date: Mon, 23 Sep 2013 23:11:58 +0200
Source: manpages
Binary: manpages manpages-dev
Architecture: source all
Version: 3.54-1
Distribution: unstable
Urgency: low
Maintainer: Martin Schulze <[email protected]>
Changed-By: Simon Paillard <[email protected]>
Description:
manpages - Manual pages about using a GNU/Linux system
manpages-dev - Manual pages about using GNU/Linux for development
Closes: 553477607979
Changes:
manpages (3.54-1) unstable; urgency=low
.
* Imported Upstream version 3.54
. dir_colors.5: Add various synonyms (Closes: #553477)
. ip.7: IP_MULTICAST_IF setsockopt recognizes struct mreq (Closes: #607979)
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