我已经安装了3个NIC接口：
eth0 Link encap:Ethernet HWaddr f6:c1:9e:5e:8a:be
inet addr:192.168.100.2 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::f4c1:9eff:fe5e:8abe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3392026 errors:0 dropped:5100 overruns:0 frame:0
TX packets:2611567 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:364902559 (364.9 MB) TX bytes:266616444 (266.6 MB)
eth1 Link encap:Ethernet HWaddr 00:06:4f:00:eb:ad
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth2 Link encap:Ethernet HWaddr 2e:07:4a:15:69:7b
inet addr:192.168.6.13 Bcast:192.168.6.255 Mask:255.255.255.0
inet6 addr: fe80::2c07:4aff:fe15:697b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:300 (300.0 B)
eth0.3 Link encap:Ethernet HWaddr f6:c1:9e:5e:8a:be
inet addr:192.168.3.6 Bcast:192.168.3.255 Mask:255.255.255.0
inet6 addr: fe80::f4c1:9eff:fe5e:8abe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:25415 errors:0 dropped:0 overruns:0 frame:0
TX packets:4038 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6251410 (6.2 MB) TX bytes:300030 (300.0 KB)
eth0.4 Link encap:Ethernet HWaddr f6:c1:9e:5e:8a:be
inet addr:192.168.4.2 Bcast:192.168.4.255 Mask:255.255.255.0
inet6 addr: fe80::f4c1:9eff:fe5e:8abe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1578482 errors:0 dropped:0 overruns:0 frame:0
TX packets:1548426 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:128703459 (128.7 MB) TX bytes:138923674 (138.9 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:5430180 errors:0 dropped:0 overruns:0 frame:0
TX packets:5430180 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6389482336 (6.3 GB) TX bytes:6389482336 (6.3 GB)
带 VLAN 的接口 eth0 工作正常，但 eth2 无法建立任何连接。根本没有 ping 响应。
消息 | grep -i“eth”
[ 2.405807] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 2.405815] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 2.405833] IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
[ 3.972335] 8021q: adding VLAN 0 to HW filter on device eth0
[ 4.947006] 8021q: adding VLAN 0 to HW filter on device eth2
请注意，我没有使用 eth2 的 VLAN 配置。