fodera 16 网络配置问题

各位朋友：
下午好！
小弟初学Linux系统，学习安装fodera 16，系统装好了，但是网络一直不通。经 命令 ifconfig 后出现以下文本，请大家帮帮忙，看看是哪里出现错误！

十分感谢您的帮助！
[root@yueli zhangsong]# ifconfig
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:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:240 (240.0 b) TX bytes:240 (240.0 b)

p2p1 Link encap:Ethernet HWaddr 10:78:D2:E2:9C:95
inet addr:192.168.21.32 Bcast:192.168.21.255 Mask:255.255.255.0
inet6 addr: fe80::1278:d2ff:fee2:9c95/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9353 errors:0 dropped:0 overruns:0 frame:0
TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1435723 (1.3 MiB) TX bytes:8585 (8.3 KiB)
Interrupt:44 Base address:0xa000