连接wifi无法ping通

LogPI LV 4

获取ip地址

root@TinaLinux:/# udhcpc -i wlan0
udhcpc: started, v1.27.2
udhcpc: sending discover
udhcpc: sending select for 192.168.100.243
udhcpc: lease of 192.168.100.243 obtained, lease time 43200
udhcpc: ifconfig wlan0 192.168.100.243 netmask 255.255.255.0 broadcast 192.168.100.255
udhcpc: setting default routers: 192.168.100.1

root@TinaLinux:/# ifconfig
br-lan    Link encap:Ethernet  HWaddr 3E:89:D0:BD:72:36
          inet addr:192.168.100.1  Bcast:192.168.100.255  Mask:255.255.255.0
          inet6 addr: fdb2:bc1c:1d47::1/60 Scope:Global
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:130 (130.0 B)

eth0      Link encap:Ethernet  HWaddr 3E:89:D0:BD:72:36
          UP 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)
          Interrupt:62

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:4290 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4290 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:335040 (327.1 KiB)  TX bytes:335040 (327.1 KiB)

wlan0     Link encap:Ethernet  HWaddr 78:99:9C:CF:40:46
          inet addr:192.168.100.243  Bcast:192.168.100.255  Mask:255.255.255.0
          inet6 addr: fe80::7a99:9cff:fecf:4046/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2222 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:740457 (723.1 KiB)  TX bytes:5166 (5.0 KiB)

其中wlan0得ip地址确实配置上了，但是无法ping同。使用有线网是能ping通的。使用的镜像版本是通过v1.01的SDK编译的。

whycan晕哥 LV 9

其他interface都down了，只留wlan0试一试。

三颗芋圆 LV 4

@logpi
@logpi
你好，你这个问题是恰好连接的路由器被桥接到br-lan上了。
1.br-lan默认的ip地址是192.168.100.1
2.看你的wlan0获取的ip地址是192.168.100.x
所以恰好就把br-lan当成网关了，请求和数据都发送不出去了。
解决办法：
1.直接修改一下br-lan的地址。
ifconfig br-lan 192.168.200.1(只要不和网关一样就好)

2.连接其他路由器（非192.168.100.1）不会有这个问题。

LogPI LV 4

@rcfly
@whycan
按照@RCfly 的方法解决了问题，非常感谢

DOT小文哥 LV 8

@rcfly 感谢日初飞，下次统计FAQ的时候记得报数+1

whycan晕哥 LV 9

@rcfly 学习了