From owner-FreeBSD-net-jp@jp.freebsd.org  Mon Nov 16 17:42:33 1998
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Subject: [FreeBSD-net-jp 1134] Re: how to use bpf/multicast 
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itojun $B$5$s(B:
> 	portability$B$N$?$a$K$b!"(Bbpf$B@8$GC!$/$N$OHr$1$F!"(Blibpcap$B;H$&$N$,0lHV$G$9!#(B
> 	ftp.ee.lbl.gov($B$G$"$C$F$k$+$J(B?)$B$K$"$j$^$9!#(B]

libpcap $B$G%U%l!<%`$r=q$-=P$;$k$h$&$K$9$k%Q%C%A$,(B

http://www.cyberus.ca/~hadi/pcap.html

$B$K$"$j$^$9(B. $B$o$?$7$O;n$7$F$$$J$$$N$G(B, $B$3$l0J>e$O$o$+$j$^$;$s$,(B. 

  BPF $B$O(B man page $B$N(B filter machine $B$NNcBj%W%m%0%i%`$K%P%0$,$"$j$^$7$?(B. 
$B$@$$$VA0$K(B pr $B$7$F(B, $BD>$7$?$H$NO"Mm$O$b$i$$$^$7$?(B. 

FreeBSD-2.1.5R, FreeBSD-2.1.7R $B$G$O(B bpf $B7PM3$G=q$-$@$7$?(B ether packet $B$N(B
ether type $BMs$N%P%$%H$,(B

/usr/src/sys/net/if_ethersubr.c $B$N(B ether_output.c 

$B$G%9%o%C%W$5$l$^$9(B. 2.2.X, 3.0 $B$G$O%9%o%C%W$5$l$^$;$s(B. $B$3$N$X$s$G6lO+(B
$B$7$J$$$?$a$K$O(B pcap $B$N$[$&$,$$$$$+$b$7$l$^$;$s$M(B. $B$o$?$7$O(B pcap $B$N(B
$B%I%-%e%a%s%H$N>/$J$5$K$a$2$F@8(B bpf $B$G$9(B. man page $B$H<B83(B ($BB>$N%[%9%H$G(B
tcpdump $B$7$J$,$i(B) $B$G$7$?(B. 

$BE73$NI<#(B
