netdev - Re: [IPv6] "sendmsg: invalid argument" to multicast group after some time

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Message-ID: <OF94B2D0C1.33DB4CE6-ON882574B7.001FDB00-882574B7.00200870@us.ibm.com>
Date:	Sun, 31 Aug 2008 22:49:50 -0700
From:	David Stevens <dlstevens@...ibm.com>
To:	Bernhard Schmidt <berni@...kenwald.de>
Cc:	netdev@...r.kernel.org, netdev-owner@...r.kernel.org
Subject: Re: [IPv6] "sendmsg: invalid argument" to multicast group after some	time

My wild guess is that you have lost the multicast bit on
the interface, by a daemon that is just setting the interface
flags rather than doing get/or in new/set.

When it's failing, you might try looking at the interface
flags to see if IFF_MULTICAST is still there.

                                +-DLS

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