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Date: Thu, 19 Aug 1999 17:33:18 +0900
From: Katsuyuki Maeda <kei@nanet.co.jp>
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Subject: [FreeBSD-net-jp 1829] Re: same subnet two nic
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$B!!A0ED!w(Bnanet$B$G$9!#(B

Minoru Oikawa wrote:
>  $B$J$s$G$d$C$F$_$J$$$N$G$7$g(B? $B$=$NJU$+$i%N!<%H%Q%=%3%s$H(B NIC
> $BFsKg$+$C$Q$i$($P!"(BPAO $BF~$l$F$9$0;n$;$k$G$7$g$&$K!D(B
> 
>  $BLLGr$$8=>]$r$_$k;v$,=PMh$F3Z$7$$$s$G!"$d$C$F$_$k$3$H$r$*4+(B
> $B$a$7$F$*$-$^$9!#(B
	($BCfN,(B)
>  $B$@$+$i!"(Bping $B$r=P$7$?%R%H$OFsG\$N$*JV;v$r<u$1<h$k$o$1$@!#3Z(B
> $B$7$$$G$7$g(B? releng3 $B$G$bJQ$C$F$J$$$+3NG'$7$F$A$g!<$@$$$M!#(B

$B!!(B3.2-STABLE$B$N%^%7%s$G<B83$7$F$_$^$7$?!#(B

|ed1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
|        inet 192.168.0.100 netmask 0xffffff00 broadcast 192.168.0.255
|        ether 00:c0:26:11:ba:25
|fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
|        inet 192.168.0.101 netmask 0xffffff00 broadcast 192.168.0.255
|        ether 00:a0:00:c9:04:4e
|        media: autoselect (100baseTX) status: active
|        supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UT
|P <full-duplex> 10baseT/UTP

$B!!$H$$$&@_Dj$N%^%7%s$KBP$7$F!"(B

|kei@batten[214] ping 192.168.0.100
|PING 192.168.0.100 (192.168.0.100): 56 data bytes
|64 bytes from 192.168.0.100: icmp_seq=0 ttl=255 time=0.502 ms
|64 bytes from 192.168.0.100: icmp_seq=1 ttl=255 time=0.464 ms
|64 bytes from 192.168.0.100: icmp_seq=2 ttl=255 time=0.481 ms
|^C
|--- 192.168.0.100 ping statistics ---
|3 packets transmitted, 3 packets received, 0% packet loss
|round-trip min/avg/max/stddev = 0.464/0.482/0.502/0.016 ms

$B!!$3$N$H$-!"(Btcpdump$B$r<h$k$H!"(B

|17:03:27.634008 0:a0:c9:81:8d:18 0:c0:26:11:ba:25 0800 98: 192.168.0.2 > 192.168
|.0.100: icmp: echo request
|17:03:27.634359 0:c0:26:11:ba:25 0:a0:c9:81:8d:18 0800 98: 192.168.0.100 > 192.1
|68.0.2: icmp: echo reply

$B!!$NMM$K!"(Bed1$B$N8}$+$iJV;v$rJV$7$F$$$^$9!#(B

$B!!$5$i$K!"(B

|kei@batten[223] ping 192.168.0.101
|PING 192.168.0.101 (192.168.0.101): 56 data bytes
|64 bytes from 192.168.0.101: icmp_seq=0 ttl=255 time=0.393 ms
|64 bytes from 192.168.0.101: icmp_seq=1 ttl=255 time=0.389 ms
|64 bytes from 192.168.0.101: icmp_seq=2 ttl=255 time=0.357 ms
|^C
|--- 192.168.0.101 ping statistics ---
|3 packets transmitted, 3 packets received, 0% packet loss
|round-trip min/avg/max/stddev = 0.357/0.380/0.393/0.016 ms

$B!!$N>l9g$b!"(B

|17:03:40.787577 0:a0:c9:81:8d:18 0:a0:0:c9:4:4e 0800 98: 192.168.0.2 > 192.168.0
|.101: icmp: echo request
|17:03:40.787815 0:c0:26:11:ba:25 0:a0:c9:81:8d:18 0800 98: 192.168.0.101 > 192.1
|68.0.2: icmp: echo reply

$B!!$H$J$j!"F1$8$/(Bed1$B$N8}$+$iJV;v$rJV$7$F$$$^$9!#(B
$B!!$4A[A|$NDL$j!"(Bnetstat -rn$B$9$k$H!"(B

|% netstat -rn
|Routing tables
|
|Internet:
|Destination        Gateway            Flags     Refs     Use     Netif Expire
|default            192.168.0.1        UGSc        1        0      ed1
|127.0.0.1          127.0.0.1          UH          0        0      lo0
|192.168            link#1             UC          0        0      ed1
|192.168.0.1        0:a0:c9:84:eb:8    UHLW        2        5      ed1     13
|192.168.0.2        0:a0:c9:81:8d:18   UHLW        1      277      ed1     91

$B!!$H$$$&MM$K$J$C$F$$$^$9$N$G!"Fs=E2=$K$h$k?.Mj@-$N8~>e$rA@$&$N$J$i$P!"%k!<%F%#%s%0$K(B
$B:Y9)$r$9$kI,MW$,$"$j$^$9$7!"$5$i$K!"(Barp$B$K4X$7$FJ86g$r8@$o$l$?$j$b$7$^$9!#(B
$B!!(B2.2.8$B0J9_$GDI2C$5$l$?(Bbridge$B5!9=$r$&$^$/;H$&$H2r7h$G$-$k$N$+$bCN$l$^$;$s!#(B

--
Nagasaki Network Service (http://www.nanet.co.jp/)
 kei@nanet.co.jp <Katsuyuki Maeda> (http://www.nanet.co.jp/~kei/)
