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Why does sending multicast UDP require a gateway?
- From: Grant Edwards <grant dot b dot edwards at gmail dot com>
- To: ecos-discuss at sources dot redhat dot com
- Date: Tue, 29 Mar 2011 22:33:09 +0000 (UTC)
- Subject: [ECOS] Why does sending multicast UDP require a gateway?
Somebody I work with has spent the last three days trying to send UDP
multicast packets using eCos and the FreeBSD network stack.
After quite a bit of trial-and-error we've discovered that you can't
send UDP multicast packets without configuring a valid gateway
address.
That seems broken to me.
What are you supposed to do if you're on a strictly local network that
doesn't _have_ a gateway? [That is the case for many of our products.]
UDP multicast (by definition) won't use the gateway, so why require
that one is configured?
--
Grant Edwards grant.b.edwards Yow! It's some people
at inside the wall! This is
gmail.com better than mopping!
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