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Date: Fri, 2 Oct 2009 16:12:33 +0900
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Subject: [FreeBSD-users-jp 92527] Re: UDP limited broadcast
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> $B$3$&$d$k$H!"(BDSTIP $B$O(B 255.255.255.255 $B$K$J$C$F$$$k$h$&$G$9$,!"(B
> DST $B$N(B MAC $B%"%I%l%9$O%G%U%)%k%H%2!<%H%&%'%$$N$b$N$K$J$C$F$$(B
> $B$^$9!#(B

ip(4) $B$r8+$k$H!"(BSOCK_RAW $B$G(B IP_ONESBCAST $B$r@_Dj$9$l$P(B
$BNI$5$=$&$G$9$,!"(Bsin.sin_addr.s_addr $B$,(B 202.23.252.255
$B$J$I$G$"$l$P!"%$%5%M%C%H%U%l!<%`$N08@h$,(B IFF_BROADCAST
(ff:ff:ff:ff:ff:ff) $B$K$J$j$^$9!#$H$3$m$,(B
sin.sin_addr.s_addr $B$,(B 255.255.255.255 $B$@$H!"(Bdefault
route $B$KG[Aw$5$l!"(BIP_ONESBCAST $B$OL5;k$5$l$^$9!#$=$l$G(B
$B$O$H!"(BSO_DONTROUTE $B%*%W%7%g%s$rDI2C$9$k$H!"(Bsendto()
$B$G(B Network is unreachable $B$N%(%i!<(B $B!*(B

$B$I$&$b!"%O!<%I%&%'%"$K6a$$$H$3$m$G;H$&$7$+$J$$$N$+$b$7(B
$B$l$^$;$s$,!"(BLinux $B$@$H!"$3$s$J0UCO0-$O$7$J$$$h$&$G!"$H(B
$B$j$"$($:$N6[5^HrFq$r9M$($h$&$+$H;W$$$^$9!#(B

$BJ?NS(B $B9@0l(B
