Date: Fri, 27 Sep 2002 07:27:54 +0330 From: "soheil h" <soheil_h_y@hotmail.com> To: tlambert2@mindspring.com, freebsd-net@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: UNKNOWN IP OPTION emergency Message-ID: <F175uCxzWIdqatTUC5y00000876@hotmail.com>
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Hi but the tunnel_send() for multicast tunnel do this with LSRR option is the tunnel_send() a standard tunnel ?????? that anyone understand it ? or not ??? Thanx >From: Terry Lambert <tlambert2@mindspring.com> >To: soheil h <soheil_h_y@hotmail.com> >CC: freebsd-net@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG >Subject: Re: UNKNOWN IP OPTION emergency >Date: Thu, 26 Sep 2002 10:07:41 -0700 > >soheil h wrote: > > as in stevens' Tcp/Ip illustrated says when a router see an unknown >option > > it must silently ignore it but when i put an option by type 253 len 12 >and > > 10 byte of data > > some router on my path drop it > > how can i set an option an put 2 ip address in it that no router delete >my > > data > >Send a known option, instead? > >Ignore := pass | drop > >Normally, it means "drop", because unknown options are assumed to >be hop-to-hop, meaning it's illegal for them to come from a router >that did not originate them (i.e. a router that doesn't recognize >the option forwarding it to one that does). > >If you want a covert data channel, you aren't going to be able to >do it with router options. 8-). > >-- Terry _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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