Подскажите пожалуйста, в чем может быть проблема

C:\Documents and Settings\user>ipfw add pipe 1 all from any to 192.168.1.2
00100 pipe 1 ip from any to to 192.168.1.2

C:\Documents and Settings\user>ipfw add pipe 1 all from to 192.168.1.2 to any
00200 pipe 1 ip from to 192.168.1.2 to any

C:\Documents and Settings\user>ipfw show
00100      0           0 pipe 1 ip from any to 192.168.1.2
00200       0          0 pipe 1 ip from 192.168.1.2 to any
65535 5555366 2017238782 allow ip from any to any

C:\Documents and Settings\user>ipfw pipe 1 config bw 64000
error 1: setsockopt(IP_DUMMYNET_CONFIGURE) (win32: 87)

C:\Documents and Settings\user>ipfw pipe show
error 71: getsockopt(IP_DUMMYNET_GET) (win32: 87)