netdev - Re: linux kernel's IPV6_MULTICAST_HOPS default is 64; should be 1?

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Message-ID: <OF8BB88147.4F3756DA-ON88257719.002A895A-88257719.002AEB08@us.ibm.com>
Date:	Tue, 4 May 2010 00:48:46 -0700
From:	David Stevens <dlstevens@...ibm.com>
To:	enh <enh@...gle.com>
Cc:	brian.haley@...com, David Miller <davem@...emloft.net>,
	netdev@...r.kernel.org, netdev-owner@...r.kernel.org
Subject: Re: linux kernel's IPV6_MULTICAST_HOPS default is 64; should be 1?

It's set to -1 by default, but the common code for unicast and
multicast in getsockopt is falling through to use the dst_entry.

I believe (though I haven't actually tried it recently) it actually
uses "1" for the default value for multicast; it just doesn't
report it correctly. It should distinguish multicast from unicast
in the <0 check in getsockopt.
                                        +-DLS

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