我已通过 hostapd 建立了一个使用 SIM 网络（通过数据呼叫）的热点，我可以从手机连接到网络，但无法浏览任何内容。我怀疑从站点请求的数据包没有得到正确服务，但我并不完全了解整个情况。
有趣的是，我可以从运行 hostapd 的 Linux shell ping google.com
以下是我设置 hostapd 的方法：
modprobe <wifi-driver.ko>
iw dev wlan0 set type __ap
ifconfig wlan0 up
brctl addif bridge0 wlan0
hostapd -dd hostapd.conf
还有一个后续问题：当wlan0没有添加到桥接器时，不会发生来自站点的连接。
输出ifconfig：
bridge0 Link encap:Ethernet HWaddr 0e:7d:2a:ce:86:e0
inet addr:192.168.225.1 Bcast:192.168.225.255 Mask:255.255.255.0
inet6 addr: fe80::c7d:2aff:fece:86e0/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:933 errors:0 dropped:0 overruns:0 frame:0
TX packets:549 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:288140 (281.3 KiB) TX bytes:79139 (77.2 KiB)
eth0 Link encap:Ethernet HWaddr 00:55:7b:b5:7d:f7
inet addr:169.254.4.1 Bcast:169.254.4.255 Mask:255.255.255.0
inet6 addr: fe80::255:7bff:feb5:7df7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:963 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:303266 (296.1 KiB)
Interrupt:75
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:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:1840 (1.7 KiB) TX bytes:1840 (1.7 KiB)
rmnet_data0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:25.24.48.170 Mask:255.255.255.252
UP RUNNING MTU:1460 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9480 (9.2 KiB) TX bytes:20389 (19.9 KiB)
rmnet_data1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:25.19.213.156 Mask:255.255.255.248
UP RUNNING MTU:1460 Metric:1
RX packets:278 errors:0 dropped:0 overruns:0 frame:0
TX packets:331 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:51353 (50.1 KiB) TX bytes:151692 (148.1 KiB)
rmnet_ipa0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP RUNNING MTU:2000 Metric:1
RX packets:209 errors:0 dropped:0 overruns:0 frame:0
TX packets:379 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:62153 (60.6 KiB) TX bytes:173597 (169.5 KiB)
wlan0 Link encap:Ethernet HWaddr 00:03:7f:61:a0:41
inet6 addr: fe80::203:7fff:fe61:a041/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1104 errors:0 dropped:0 overruns:0 frame:0
TX packets:548 errors:0 dropped:9 overruns:0 carrier:0
collisions:0 txqueuelen:3000
RX bytes:327093 (319.4 KiB) TX bytes:87133 (85.0 KiB)