On Thu, Jan 30, 2014 at 11:47:09AM +0100, Steinar H. Gunderson wrote:

On Mon, Jan 20, 2014 at 07:40:25PM +0100, Steinar H. Gunderson wrote:

quoted

quoted

I currently only remember one commit 0a7e22609067ff ("ipv4: fix
ineffective source address selection") which did affect multicast source
address selection in recent times.

I tried 3.10.27, just to check something older. I also tried 3.10.27 with
0a7e22609067ff reverted, and it's still wrong.

I am thinking this might have something to do with the machine switching to
systemd, presumably changing the order of DHCP and static addresses being
assigned...

Anything more I can do here?

Can you give a bit more background what multicast application you are running
on the box and also post a cat /proc/net/igmp?

(For the application info an strace how the join to the multicast address would be
interesting.)

I guess a workaround would be to bind the join to a specific interface.

Greetings,

  Hannes