Date: Thu, 04 Nov 2004 01:53:41 +0900 (JST) From: Hideki Yamamoto <yamamoto436@oki.com> To: freebsd-stable@FreeBSD.ORG, freebsd-ipfw@FreeBSD.ORG Subject: IPv6 bridge + gif tunnel Message-ID: <20041104.015341.71171019.yamamoto436@oki.com>
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Hi,
I am considering a network application test environments with FreeBSD
boxes as following. In the following, we show three step
architectures. This is an example for IPv6 VPN using IPv4 network. I would
like to use the IPv6 address assigned by IPv6 router on the remote the
IPv6 terminal. And the packets from/to IPv6 MC router, which supports
MLDv1 or v2 specification, are also transfered to/from the IPv6
terminal.
At the first step, I think it seems to be possible by using ipf bridge
function. I wonder if it is possible to implement the second step or
later. Are there any information about this issue? Any information
are welcomed. Thanks in advance.
<<STEP1>> Simple IPv6 bridge
+------box#1-------------+
[IPv6 MC router ]-+---------+-(fxp0) IPv6 bridge |
| |
| |
+--+-(bge0) IPv6 bridge |
| +------------------------+
|
| term#1
+-----[IPv6 terminal(NDP client)]
<<STEP2>> IPv6 bridge cascaded by gif tunnel
+------box#2------------------+
[IPv6 MC router ]-+---------+-(fxp0) IPv6 bridge |
| |
| |
+--+-(bge0) IPv6 bridge and IPv4 |
| | (gif0) IPv6 over IPv4 |
| +-----------------------------+
|
<IPv4 router>
|
| +-------box#3-----------------+
+--+-(bge1) IPv6 bridge and IPv4 |
| (gif1) IPv6 over IPv4 |
| |
| |
| |
+--+-(fxp0) IPv6 bridge |
| +-----------------------------+
|
| term#2
+-----[IPv6 terminal(NDP client)]
<<STEP3>> IPv6 bridge cascaded by gif tunnel with tun device
+------box#4------------------+
[IPv6 MC router ]-+---------+-(fxp0) IPv6 bridge |
| |
| |
+--+-(tun0) IPv6 bridge and IPv4 |
| | (gif0) IPv6 over IPv4 |
| +-----------------------------+
|
[PPPoE server]
[IPv4 router ]
|
| +-------box#5-----------------+
+--+-(bge1) IPv6 bridge and IPv4 |
| (gif1) IPv6 over IPv4 |
| |
| |
| |
+--+-(fxp0) IPv6 bridge |
| +-----------------------------+
|
| term#3
+-----[IPv6 terminal(NDP client)]
P.S. To save network cards and to show the network in detail,
I thik that the ideal architecture is as follows:
+--------box#6----------------+
[IPv6 router(RA)]-+---------+-(fxp0) IPv6 bridge |
[PPPoE server]-+ | (tun0) IPv6 bridge and IPv4 |
| | (gif0) IPv6 over IPv4 |
| | |
| +-----------------------------+
|
[IPv4 router ]
|
|
| +--------box#7----------------+
[IPv6 router(RA)]-+---------+-(bge1) IPv6 bridge |
[PPPoE server]-+ | (tun1) IPv6 bridge and IPv4 |
| (gif1) IPv6 over IPv4 |
| |
| |
+--+-(fxp0) IPv6 bridge |
| +-----------------------------+
|
| term#4
+-----[IPv6 terminal(NDP client)]
-----------------------------------------------------------------
Hideki YAMAMOTO |
Broadband Media Solutions Department | E-mail: yamamoto436@oki.com
Broadband Media Company | Tel: +81-48-420-7012
Oki Electric Industry Co., Ltd. | FAX: +81-48-420-7016
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