Fedora 无法上网

eth0 Link encap:Ethernet HWaddr 00:1A:4D:18:F9:7D

inet6 addr: fe80::21a:4dff:fe18:f97d/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:5 errors:0 dropped:0 overruns:0 frame:0

TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000

RX bytes:320 (320.0 b) TX bytes:4643 (4.5 KiB)

Interrupt:19

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:16436 Metric:1

RX packets:4825 errors:0 dropped:0 overruns:0 frame:0

TX packets:4825 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0

RX bytes:34171236 (32.5 MiB) TX bytes:34171236 (32.5 MiB)

virbr0
Link encap:Ethernet HWaddr 00:00:00:00:00:00

inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0

inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0

RX bytes:0 (0.0 b) TX bytes:9140 (8.9 KiB)