在FreeBSD中能否实现响应ping命令时只返回固定的包长？

bbssdd01

在FreeBSD中能否实现响应ping命令时只返回固定的包长？如对端用1000 bytes的包长ping，我只返回56 bytes？

如：

C:\>ping www.sina.com.cn -l 1000

Pinging jupiter.sina.com.cn [218.30.66.101] with 1000 bytes of data:

Reply from 218.30.66.101: bytes=56 (sent 1000) time=43ms TTL=244
Reply from 218.30.66.101: bytes=56 (sent 1000) time=42ms TTL=244
Reply from 218.30.66.101: bytes=56 (sent 1000) time=42ms TTL=244
Reply from 218.30.66.101: bytes=56 (sent 1000) time=42ms TTL=244

Ping statistics for 218.30.66.101:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 42ms, Maximum = 43ms, Average = 42ms

C:\>

[ 本帖最后由 bbssdd01 于 2008-4-8 17:23 编辑 ]

bbssdd01

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[ 本帖最后由 bbssdd01 于 2008-4-9 22:04 编辑 ]