Date: Tue, 4 Sep 2001 08:08:40 -0500 (CDT) From: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> To: qinli@direct.ksp.nis.nec.co.jp, 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: <200109041308.f84D8eS80775@web.cs.ndsu.nodak.edu> In-Reply-To: <3B947CE6.54DF274E@direct.ksp.nis.nec.co.jp>
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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... as root: # sysctl -w net.inet.icmp.bmcastecho=1 the default is 0 and in sys/netinet/ip_icmp.c if this value is zero the multicast and broadcast pings are dropped. I suspect the localhost hast to be in promiscuous mode or subscribe to the multicast group to get the echo request/reply. --mark tinguely. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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