有关ifconfig命令?
eth0 Link encap:Ethernet HWaddr 00:1E:8C:BB:98:99
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:50688 errors:0 dropped:0 overruns:0 frame:0
TX packets:42309 errors:0 dropped:0 overruns:0 carrier:1
collisions:0 txqueuelen:1000
RX bytes:67292546 (64.1 MiB) TX bytes:0 (0.0 b)
Memory:fbfc0000-fc000000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:62 errors:0 dropped:0 overruns:0 frame:0
TX packets:62 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4100 (4.0 KiB) TX bytes:4100 (4.0 KiB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:59.36.239.70 P-t-P:59.36.236.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1452 Metric:1
RX packets:50498 errors:0 dropped:0 overruns:0 frame:0
TX packets:42119 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:66170102 (63.1 MiB) TX bytes:4585818 (4.3 MiB)
为什么MASK是:255.255.255.255?