在 /etc/rc.conf find the main ifconfig_em0 or ifconfig_em1 下面是使用模版:
1. 10 Full - ifconfig_em0="inet x.x.x.x netmask x.x.x.x media 10baseT/UTP mediaopt full-duplex"
2. 100 Full - ifconfig_em0="inet x.x.x.x netmask x.x.x.x media 100baseTX mediaopt full-duplex"
3. 1000 Full - ifconfig_em0="inet x.x.x.x netmask x.x.x.x media 1000baseTX mediaopt full-duplex"