Oops,
(B
(BSao mi`nh la.i ddi ping broadcast address nhi?
(BXin lo^~i ca'c ba'c.
(B
(B--- Bit Takeshi <[EMAIL PROTECTED]> $B$+$i$N%a%C%;(B
$B!<%8!'(B
(B> Ca'c ba'c thu+? gia?i thi'ch vi` sao em cha.y ping
(B> -c 2
(B> ma` output ra nhie^`u the^' na`y
(B> 
(B> FreeBSD 4.9, 
(B> 
(B> ----------
(B> [EMAIL PROTECTED] 172.21.65.128
(B> PING 172.21.65.128 (172.21.65.128): 56 data bytes
(B> 64 bytes from 172.21.65.141: icmp_seq=0 ttl=255
(B> time=0.214
(B> ms
(B> 64 bytes from 172.21.65.142: icmp_seq=0 ttl=255
(B> time=0.277
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.240: icmp_seq=0 ttl=64
(B> time=0.285
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.144: icmp_seq=0 ttl=255
(B> time=0.291
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.233: icmp_seq=0 ttl=255
(B> time=0.296
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.143: icmp_seq=0 ttl=255
(B> time=0.324
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.200: icmp_seq=0 ttl=255
(B> time=0.378
(B> ms (DUP!)
(B> 64 bytes from xx.xx.xx.xx: icmp_seq=0 ttl=255
(B> time=0.566
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.253: icmp_seq=0 ttl=64
(B> time=0.632
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.254: icmp_seq=0 ttl=255
(B> time=0.992
(B> ms (DUP!)
(B> 64 bytes from 172.21.65.141: icmp_seq=1 ttl=255
(B> time=0.154
(B> ms
(B> 
(B> --- 172.21.65.128 ping statistics ---
(B> 2 packets transmitted, 2 packets received, +9
(B> duplicates,
(B> 0% packet loss
(B> round-trip min/avg/max/stddev =
(B> 0.154/0.401/0.992/0.230 ms
(B> [EMAIL PROTECTED] ~$alias  | grep ping
(B> alias ping='ping -c 2'
(B> [EMAIL PROTECTED]
(B> [EMAIL PROTECTED] ~$/sbin/ifconfig
(B> fxp0:
(B> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
(B> mtu 1500
(B>  inet 172.21.65.139 netmask 0xffffff80
(B> broadcast
(B> 172.21.65.255
(B>  inet6 3ffe:501:839:2903::2 prefixlen 64
(B>  atalk 65280.179 range 0-65534 phase 2
(B> broadcast
(B> 0.255
(B>  ether 00:30:48:21:b6:38
(B>  media: Ethernet autoselect (100baseTX
(B> <full-duplex>)
(B>  status: active
(B> 
(B> ---------------
(B> 
(B> http://www.fedu.uec.ac.jp/~vuhung/
(B> http://chuiyang.org
(B> 
(B> __________________________________
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