Date: Fri, 28 Jun 2013 20:00:01 GMT From: Mark Linimon <linimon@lonesome.com> To: freebsd-net@FreeBSD.org Subject: Re: kern/179901: [netinet] [patch] Multicast SO_REUSEADDR handled incorrectly Message-ID: <201306282000.r5SK01qp097855@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/179901; it has been noted by GNATS. From: Mark Linimon <linimon@lonesome.com> To: bug-followup@FreeBSD.org Cc: Subject: Re: kern/179901: [netinet] [patch] Multicast SO_REUSEADDR handled incorrectly Date: Fri, 28 Jun 2013 14:55:38 -0500 ----- Forwarded message from Bernd Walter <ticso@cicely7.cicely.de> ----- Date: Fri, 28 Jun 2013 12:15:14 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: linimon@freebsd.org Cc: freebsd-bugs@freebsd.org, freebsd-net@freebsd.org Subject: Re: kern/179901: [netinet] [patch] Multicast SO_REUSEADDR handled incorrectly User-Agent: Mutt/1.5.11 I don't know if this is related or a different bug, but the same mentioned commits are suspicious for us. We had been running with our own IPv6 software into the same REUSEADDR problem and changed to REUSEPORT as this is how it is done in mcastread from mcast-tools port. Don't know where we originally got the REUSEADDR from, probably a Stevens book. So far binding works with this change in our software. However we only receive packets from network and not packets from the host itself. We use multicast to notify multiple processes on multiple machines, including the machine itself. To reproduce: - use two hosts - start mcastread on each of them on an interface with shared LAN - send via mcastsend on one host - packets are received on the other host, but not with the mcastread on the same host -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm. ----- End forwarded message -----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201306282000.r5SK01qp097855>