Date: Wed, 18 Aug 1999 22:12:02 -0700 From: George Chung <gchung@microsoft.com> To: "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org> Subject: on dual-homed machine, how to specify outgoing interface to send multicast packets Message-ID: <C35556591D34D111BB5600805F1961B910ECC110@RED-MSG-47>
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Platform: FreeBSD 3.2 RELEASE, "default" kernel on a dual-homed box Experience level: newbie On a dual-homed machine, there is no "network" portion of the destination Class D address to make any kind of determination as to which outgoing interface to use. So I make a call to setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, &inaddr, sizeof(struct in_addr)); I confirm that this call works. Plus I doublechecked by giving it a bogus inaddr, and it gave me errno 49 EADDRNOTAVAIL. However, when I try send a packet to "225.0.0.1", I get errno 65 EHOSTUNREACH. Please help! :-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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