TP-LINK MR3020 и Меркурий 200

opkg update
opkg install kmod-usb-serial-ch341
opkg install ser2net

/etc/ser2net.conf -> 1001:raw:0:/dev/ttyUSB0:9600 NONE 1STOPBIT 8DATABITS -XONXOFF LOCAL -RTSCTS

vim /etc/init.d/ser2net ->
#!/bin/sh /etc/rc.common
# Ser2Net Init Script

START=10
STOP=15

start() {
ser2net
}

stop(){
killall ser2net
}

chmod 755 /etc/init.d/ser2net
/etc/init.d/ser2net enable
reboot