Date: Tue, 04 Sep 2001 16:04:06 +0900 From: "Qin, Li" <qinli@direct.ksp.nis.nec.co.jp> To: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD 4.3 doesn't support multicast for IPv4 by default? Message-ID: <3B947CE6.54DF274E@direct.ksp.nis.nec.co.jp> References: <200109031403.f83E3If75137@web.cs.ndsu.nodak.edu>
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I've tried several other hosts on the network, only got icmp echo reply from those installed with FreeBSD 2.2.8-RELEASE. That's why I wonder if 4.3 doesn't support multicast for IPv4 at first, some customized configuration might be needed... Thanks. Qin Li mark tinguely wrote: > > A quick test with tcpdump on FreeBSD 4.3-RELEASE shows that the > ping gets sent out the primary multicast network port: > > $ ping 224.1.1.1 > > # tcpdump -n -i tx0 net 224 > tcpdump: listening on tx0 > 08:55:54.643167 127.10.10.10 > 224.1.1.1: icmp: echo request [ttl 1] > 08:55:55.652619 127.10.10.10 > 224.1.1.1: icmp: echo request [ttl 1] > 08:55:56.662630 127.10.10.10 > 224.1.1.1: icmp: echo request [ttl 1] > 08:55:57.672646 127.10.10.10 > 224.1.1.1: icmp: echo request [ttl 1] > 08:55:58.682659 127.10.10.10 > 224.1.1.1: icmp: echo request [ttl 1] > > I believe that certain ICMP messages are not suppose to be sent in > reply to multicasts. Check to see if any other hosts on the network > are recieving and replying to the echo request. > > --mark tinguely. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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