Date: Thu, 21 Jul 2011 09:56:50 -0400 From: Lowell Gilbert <Lowell@Be-Well.Ilk.Org> To: Aryeh Friedman <aryeh.friedman@gmail.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: best way to force a single packet to be sent via a specific interface Message-ID: <44livrlot9.fsf@be-well.ilk.org> In-Reply-To: <CAGBxaXmRObHBrRauXqFiy71FT6KnuztzW9jBmvYKU%2B9MdJqsQQ@mail.gmail.com> (Aryeh Friedman's message of "Thu, 21 Jul 2011 04:00:20 -0400") References: <CAGBxaXmRObHBrRauXqFiy71FT6KnuztzW9jBmvYKU%2B9MdJqsQQ@mail.gmail.com>
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Aryeh Friedman <aryeh.friedman@gmail.com> writes: > I have both ethernet (the default route and such) and ppp done via > "ppp -ddial" the man page for ppp(8) says tun0 will not have an IP > assigned until a single packet is sent on it... what is the best way > to have one packet sent on it (ping only always ifaces on multicast, > traceroute seems to have no way to say exit after the first hop and/or > after one packet is sent, tcpdump refuses a "-c 0" arg saying it is > illegal) I can't parse what you said about ping. I seem to recall doing that (with '-I' back when I was doing demand dialing with ppp(8).
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