opkg update
opkg remove wpad-mini
# if you remove it, it will not work
opkg install wpad hostapd-utils
reboot && exit
# wait about 2 minutes
hostapd_cli -i wlan1 wps_pbc
Now, no which hosapd package i install i cannot find the hostapd_cli command, do you know where it is?
# opkg install hostapd-utils
Installing hostapd-utils (2018-04-09-fa617ee6-5) to root...
Downloading http://downloads.openwrt.org/releases/18.06.1/packages/mips_24kc/base/hostapd-utils_2018-04-09-fa617ee6-5_mips_24kc.ipk
Configuring hostapd-utils.
# opkg files hostapd-utils
Package hostapd-utils (2018-04-09-fa617ee6-5) is installed on root and has the following files:
/usr/sbin/hostapd_cli
/etc/rc.button/wps