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To: IPv6-jp@jp.freebsd.org
In-reply-to: nakagawa's message of Tue, 01 Feb 2000 12:54:08 JST.
      <20000201125408T.nakagawa@kansai.oki.co.jp> 
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From: Jun-ichiro itojun Hagino <itojun@iijlab.net>
Date: Tue, 01 Feb 2000 13:11:38 +0900
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Subject: [IPv6-jp 544] Re: source address selection via gif 
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>$B;EMM$b%/%j%"$K$J$C$F$$$F!"(BKAME $B$G$N<BAuJ}K!$bL@$i$+$K$J$C$F$$$k$,!"<B(B
>$BAu$,8e2s$7$K$J$C$F$$$k$C$F$3$H$G$9$M!#(B

	1$BHVL\$@$1$9$4$/0c$$$^$9!#(B
	- $B;EMM$OA4A3%/%j%"$G$O$"$j$^$;$s(B($B$?$/$5$s$3$C$A$GN`?d$7$F$$$k(B)$B!#(B
	- $B!V(Bkame$B$G<BAu$9$k$J$i$3$&$9$k$@$m$&!W$H$$$&$N$OF,$K$"$j$^$9!#(B
	  $B$G$b$=$l$G$&$^$/$$$/$+$O$o$+$j$^$;$s!#(B
	-  kame$B$G$O<BAu$"$H$^$o$7$G$9!#(B

>> $B!V$H$j$"$($:(Bsite-local only$B!W$,$$$$$N$+$I$&$+$OJL$K5DO@$,$"$C$F$9$G$K(B
>> $BBgBN2r7h$7$F$k$h$&$J$N$G$3$3$G$O$$$$$H$7$F!"(B
>$B$3$l$rCN$i$J$$$N$G!"B?J,E*30$l$J$3$H$r$$$C$F$$$k$s$@$H;W$$$^$9!#(B
>$B4JC1$K$*65$(4j$($^$;$s$+!#(B
># IPng $BFI$a$h!D(B
>$B!V(Bsite-local $B$J$s$F;H$o$J$$J}$,$$$$$K7h$^$C$F$k!W$H$$$&46$8$J$s$G$7$g(B
>$B$&$+!#(B
># site-local $B$J$s$FN.9T$C$FM_$7$/$J$$$+$i8e2s$7(B?

	- $B$J$/$7$A$c$($H6+$s$G$$$k$R$H$b$$$l$P(B
	- $B$"$C$F$b$$$$$s$8$c$J$$(B? $B$H8@$C$F$$$k$R$H$b$$$k$,(B
	- $B$[$H$s$IC/$b;H$C$F$_$?$3$H$b?($C$F$_$?$3$H$b$J$$$N$G;EMM7j$@$i$1(B
	- $B$K$b78$o$i$:!"0lIt;EMM$G$O(Bsite local address$B$,$A$c$s$HF0$/$3$H$r(B
	  $B2>Dj$7$F$$$k(B(dhcp6, router renumber)
	$B$H$$$&>u67$@$H;W$$$^$9!#>/$J$/$H$b(Bsite local address$BBg?d?JGI$C$F$N$O(B
	$B$$$J$$$h$&$J5$$,$7$F$$$^$9$,!"$$$k$N$+$J!#(B

>IPv4 $B$J463P$G!"%$%s%H%i$O(B private address $B$G(B NAT firewall $B$,$"$C$F!"$H(B
>$B$$$&4D6-$G@83h$7$F$$$?$b$N$,(B IPv6 $B;O$a$F$_$h$&$H;W$&$H!"$-$C$H(B
>site-local $B$,(B v4 $B$N(B private $B$KAjEv$9$k$b$N$@$H;W$C$F!"$H$j$"$($:(B
>site-local $B$D$1$F$d$C$F$_$h$&$H;W$C$F$7$^$&$N$,?M>p$@$H;W$&$s$G$9$,!#(B

	IPv4 NAT$B$N$H$J$j$K(BIPv6$B$9$+$9$+(B(or filter$B$7$F$b$$$$$1$I(B)$B$N%k!<%?$r(B
	$BCV$$$F$7$^$($P>!$A$G$9$,!"$=$&$$$&$o$1$K$b$$$-$^$;$s$+(B?
	$B$^$?$O(BIPv4 NAT$BH"$,(BFreeBSD$B$@$C$?$j$9$l$P!"F1$8H"$G$b$G$-$^$9!#(B

	IPv4 router to ISP
	  |
	==+===============+==
	  |		  |
	IPv4 NAT	IPv6 router
	  |		  |IPv6$B$OA4It$3$C$A$G(Brouting
	==+===============+==

>global $B$r4JC1$K$b$i$($k$H$3$mC5$5$J$-$c!D(B
># WIDE $B$5$s$O!">&MQ(B NG $B$C$F=q$$$F$k$7!D(B

	v6$B$G:#F|$+$i6b$b$&$1$H$O6/5$$G$9$M(B:-)
	WIDE pTLA$B$H$$$&<j$b$"$j$^$9$7(B($B$^$@3d$jEv$F$F$k(B? $BB?J,3d$jEv$F$F$k$h$M(B)
	iijlab 6bone$B$b$"$j$^$9!#(BIMASY$B$b$$(Bm$B$5$&!#(B

	$B$H$K$+$/!"%H%s%M%k6h4V$r6KNOC;$/$9$k$?$a!"(BIPv4$BE*$K0lHV6a$$$H$3$m$r(B
	$BC5$9$N$r$*4+$a$7$^$9!#Nc$($P(BOCN$B$+$i@~Gc$C$F$l$P(BOCN$B$N(BIPv6$B<B83%5!<%S%9(B
	$B$H$+!#(B

itojun
