48です　いろいろアドバイスありがとうございますですます。
>>49　>>50ですが
hostは
ns02# ifconfig -lu
bge0 lo0
ns02# dmesg | tail
Trying to mount root from ufs:/dev/da0s1a
bge0: link state changed to UP
arp: 192.168.1.101 moved from 00:09:aa:bb:cc:dd to 00:09:xx:yy:zz:00 on bge0
arp: 192.168.1.101 moved from 00:09:xx:yy:zz:00 to 00:09:aa:bb:cc:dd on bge0
arp: 192.168.1.101 moved from 00:09:aa:bb:cc:dd to 00:09:xx:yy:zz:00 on bge0
arp: 192.168.1.101 moved from 00:09:xx:yy:zz:00 to 00:09:aa:bb:cc:dd on bge0
arp: 192.168.1.101 moved from 00:09:aa:bb:cc:dd to 00:09:xx:yy:zz:00 on bge0
arp: 192.168.1.101 moved from 00:09:xx:yy:zz:00 to 00:09:aa:bb:cc:dd on bge0
arp: 192.168.1.101 moved from 00:09:aa:bb:cc:dd to 00:09:xx:yy:zz:00 on bge0
arp: 192.168.1.101 moved from 00:09:xx:yy:zz:00 to 00:09:aa:bb:cc:dd on bge0
clientは
ns01# ifconfig -lu
fxp0 fxp1 lo0
ns01# dmesg | tail
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
arp: 210.000.000.000 is on fxp0 but got reply from 00:0d:nn:mm:kk:ll on fxp1
クライアントfxp0はグローバルアドレス、fxp1は192.168.1.101