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From: Masakazu MOKUNO <mokuno@dynaware.co.jp>
Date: Thu, 06 Feb 1997 19:22:39 +0900
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Subject: [FreeBSD-users-jp 9516] Re: valid MAC adrs?
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$B$3$s$K$A$O!#(J
$BL]Ln$G$9!#(J

Chiharu Shibata <chi@rd.njk.co.jp> wrote$B!'(J
>$B$3$s$K$A$O!"<FED$G$9!#(J
>Ethernet$B$N(JMAC$B%"%I%l%9$NBEEv@-%A%'%C%/$K4X$9$k<ALd$G$9!#(J
>
>fe$B%I%i%$%P$N%=!<%9(J(if_fe.c)$B$N!"$3$NItJ,(J
>|        /* Make sure we got a valid station address.  */
>|        if ( ( sc->sc_enaddr[ 0 ] & 0x03 ) != 0x00
>|          || ( sc->sc_enaddr[ 0 ] == 0x00
>|            && sc->sc_enaddr[ 1 ] == 0x00
>|            && sc->sc_enaddr[ 2 ] == 0x00 ) ) return 0;
>
>$B$O!"(JMAC$B%"%I%l%9$NBEEv@-%A%'%C%/$@$H;W$$$^$9$,!"<j;}$A$N;qNA$G$O!"(J
>MAC$B%"%I%l%9$N(J1$B%P%$%HL\$N>e0L(J2bit$B$K$D$$$F!"$=$l$>$l(J
>$B!!:G>e0L(J(0x80) 1:multicast($B4^$`(Jbroadcast)$B%"%I%l%9(J / 0:$B8DJL%"%I%l%9(J
>$B!!$=$N<!(J(0x40) 1:Local$B%"%I%l%9(J / 0:Global$B%"%I%l%9(J
>$B$G$"$k$H$7$+@bL@$,$"$j$^$;$s!#(J
>$B$3$NH=Dj$N:,5r$H$J$k$h$&$J>pJs$r$4B8CN$NJ}$O$465<x2<$5$$!#(J


$B%^%k%A%-%c%9%H!&%m!<%+%k%"%I%l%9$N7o$O!";d$O$=$&$$$&$b$N$@$H;W$$9~$s$G$$$F!"K\Ev$K$3$l$G@5$7$$$N$+D4$Y$?$3$H$,$J$$$N$G:,5r$H$$$o$l$k$HEz$($K5g$7$^$9$,!"%^%k%A%-%c%9%H%"%I%l%9$N%j%9%H$O0J2<$N(JURL$B$r;~!98+$F$$$^$9!#(J

http://ftp.ftp.com/techsup/quick-help/docs/multicas.html

$B$b$C$H$^$H$^$C$?;qNA$N$"$j$+$rCN$C$F$$$?$i;d$bCN$j$?$$$G$9!#(J
#IEEE$B$N;qNA$OM-NA$J$N$G(JNG :)

$B$b$7!"%3!<%I$O!V:G2<0L$N%S%C%H!W$r8+$F$$$k$N$K;qNA$O!V:G>e0L!W$@$H$$$C$F$$$kE@$r5$$K$J$5$C$F$$$k$J$i!"(JEthernet$B$N%a%G%#%">e$G$O%G!<%?$,(JLSB(B $B$O(Jbit)$B$+$iAw?.$5$l$F$$$k$N$G$=$l$r8+$F=q$+$l$?;qNA$G$O$H;W$$$^$9!#(J


---
Masakazu Mokuno // mokuno@dynaware.co.jp
$BL]Ln(J $B2m0l(J      $B!y(J  +81-727-27-2081 Fax. 27-2087(G3)
