From: David Woodhouse <dwmw2@infradead.org>
Date: Thu, 31 Jul 2008 11:15:16 +0100

quoted text
> While I agree with Andrew's observation, I'd also respectfully submit
> that your argument is more fundamentally bogus than that. TCP and UDP
> are _not_ universally available. They go away if you set CONFIG_INET=n.

Like I said, people can locally patch their systems if they really
want to rip out fundamental things like multicast support.

Some folks might find it instructive to do a google code search
or similar on the multicast socket options this things dikes out
of the tree.

Even simple things like NTP will spew failures with this CONFIG_IGMP
thing turned off.  And that's just the tip of the iceberg.
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