ARM-LINUX WIFI热点
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1、发出热点 参考https://www.jianshu.com/p/4b00237a4140
killall wpa_supplicant > /dev/null 2>&1
ifconfig wlan0 up
ifconfig wlan0 192.168.0.1
udhcpd /etc/udhcpd.conf # 启动DHCP，必须先设置无线网卡地址，不然启动udhcp会失败
hostapd /etc/hostapd.conf -B
进阶
桥接eth方式建立热点
brctl busybox需选中
NAT方式建立热点：
sysctl net.ipv4.ip_forward=1
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
IPTALBES移植：
https://blog.csdn.net/dreamintheworld/article/details/77193650
HOSAPD多热点配置：
http://wiki.stocksy.co.uk/wiki/Multiple_SSIDs_with_hostapd
# vi /etc/hostapd/hostapd.conf # Change wlan0 to your wireless device interface=wlan0 # Tell hostapd what your new MAC address is bssid=02:ab:cd:ef:12:30 driver=nl80211 ssid=my-secured-ssid channel=1 wpa=1 wpa_passphrase=thisismyreallylongwpapassphraseandiliketurtles wpa_key_mgmt=WPA-PSK rsn_pairwise=CCMP bss=wlan0_0 ssid=ipooptoomuch bss=wlan0_1 ssid=icanhearyouhavingsex bss=wlan0_2 ssid=SurveillanceVan37 wpa=1 wpa_passphrase=crackthislongwpapassphraseifyoucanwhichidoubt wpa_key_mgmt=WPA-PSK rsn_pairwise=CCMP
网卡同时工作在STA和AP模式（修改wifi驱动配置）：
https://blog.csdn.net/leumber/article/details/85337891
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