1，未設置支持promisc

[root@bogon libpcap-1.3.0]# ifconfig eth0

eth0: flags=4163 ?mtu 1500

inet 192.168.1.18 ?netmask 255.255.255.0 ?broadcast 192.168.1.255

inet6 fe80::20c:29ff:fe90:90e9 ?prefixlen 64 ?scopeid 0x20

ether 00:0c:29:90:90:e9 ?txqueuelen 1000 ?(Ethernet)

RX packets 1529593 ?bytes 116632252 (111.2 MiB)

RX errors 0 ?dropped 13 ?overruns 0 ?frame 0

TX packets 260 ?bytes 57720 (56.3 KiB)

TX errors 0 ?dropped 0 overruns 0 ?carrier 0 ?collisions 0

2，設置支持promisc

[root@bogon libpcap-1.3.0]# ifconfig eth0 promisc

3，已設置支持promisc

[root@bogon libpcap-1.3.0]# ifconfig eth0

eth0: flags=4419 ?mtu 1500

inet 192.168.1.18 ?netmask 255.255.255.0 ?broadcast 192.168.1.255

inet6 fe80::20c:29ff:fe90:90e9 ?prefixlen 64 ?scopeid 0x20

ether 00:0c:29:90:90:e9 ?txqueuelen 1000 ?(Ethernet)

RX packets 1534849 ?bytes 117018556 (111.5 MiB)

RX errors 0 ?dropped 14 ?overruns 0 ?frame 0

TX packets 262 ?bytes 58237 (56.8 KiB)

TX errors 0 ?dropped 0 overruns 0 ?carrier 0 ?collisions 0

4，設置不支持promisc

[root@bogon libpcap-1.3.0]# ifconfig eth0 -promisc

總結

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