Date: Wed, 8 Oct 1997 20:55:08 +0400 (MSD) From: bag@sinbin.demos.su To: cmott@srv.net (Charles Mott) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: udp and ifconfig alias Message-ID: <199710081656.JAA29856@hub.freebsd.org> In-Reply-To: <Pine.BSF.3.96.971008090659.29502A-100000@darkstar.home> from "Charles Mott" at "Oct 8, 97 09:21:34 am"
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> If I have multiple addresses on the same interface created with ifconfig > alias, and a process is listening on udp *.7654, when a packet is returned > after a call to recvfrom(), is it possible to tell which address it was > sent to? I have tried calling getsockname(), but my test code doesn't > seem to be working. And the more I think about it, getsockname() doesn't > make sense for a connectionless protocol like UDP. use recvmsg call, and IP_RECVDSTADDR option enabled (man 4 ip) Alex. > > Charles Mott > >
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