Date: Thu, 14 Jun 2001 14:43:31 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: raviprasad20@netscape.net Cc: freebsd-net@FreeBSD.ORG Subject: Re: transition mechanism 6 to 4 Message-ID: <y7vvglzaa64.wl@condor.jinmei.org> In-Reply-To: <2438AE8B.28551050.9513E96F@netscape.net> References: <2438AE8B.28551050.9513E96F@netscape.net>
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>>>>> On Wed, 13 Jun 2001 03:46:15 -0400, >>>>> raviprasad20@netscape.net said: > Assume that a ipv6 packet has to travel through a ipv4 network to an ipv6 destination host. > As usual the appropriate routing entry is found for the destination address & nd6_output through the function pointer calls the appropriate output function fo the interface to transmit the packet( ifp->if_output). > (Since tunneling is implemented in freebsd through the gif interfaces & configured by the user for configured tunneling) For a gif interface gif_output() is called. > I believe that for a ipv4 destination tunnel end point gif output is going to construct a ipv4 encapsulation header & it will call ip_output() to send the packet. The ipv4 routing table will be used to send the packet to the appropriate host based on the destination ipv4 address given to the gif interface. > Kindly inform me if my understanding is correct. Yes, your understanding is correct. JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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