Date: Mon, 23 Aug 1999 11:42:11 -0700 From: George Chung <gchung@microsoft.com> To: "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org> Subject: 3 newbie Q's on routes for multicast addresses Message-ID: <C35556591D34D111BB5600805F1961B910ECC138@RED-MSG-47>
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Platform: FreeBSD 3.2 1. On a private network with no routers, I have to manually add a route for multicast addresses in order to send UDP packets to that address. I don't have to do this on a "normal" network (InterNIC assigned network address, properly connected to Internet). What protocol is running on the latter network that allows to FreeBSD boxes to automatically set up routes for multicast addresses? 2. When I manually add a route for a multicast address, I use the following command: route add -net 225.0.0.1 -netmask 255.0.0.0 -interface 10.100.100.100 Although this works, I'm not so sure about the semantics of the netmask. It seems that a netmask of 224.0.0.0 is also legit, but I wouldn't know how to explain the difference between using one over the other. What does a netmask for a class D address really mean? 3. Can someone point out the man pages for automatically adding this route at boot up time? Thanks very much, George Chung To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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