OpenWRT

Downloading the Firmware

use the OpenWRT Firmware Selector to download the appropriate image.

USB Ethernet Adapters

"for USB-to-Ethernet ASIX AX88179 based USB 3.0/2.0\ to Gigabit Ethernet adapters" (see here)

opkg update
opkg install kmod-usb-net-asix-ax88179

Updates

it is highly discouraged to update all packages use opkg update

see here

opkg update
opkg upgrade <package>

Hostname

/etc/config/system

config system
    option hostname '<your-hostname>'

Tailscale

Installation

see this OpenWRT wiki page for the basic setup guide

see this OpenWRT wiki page for all things Raspberry Pi

opkg update
opkg install tailscale
opkg install iptables-nft kmod-ipt-conntrack kmod-ipt-conntrack-extra kmod-ipt-conntrack-label kmod-nft-nat 
opkg install kmod-ipt-nat

service tailscale restart
tailscale up --ssh --advertise-routes=192.168.10.0/24

Configuraiton

/etc/config/firewall

config zone
    option name 'tailscale'
    list network 'tailscale'
    option input 'ACCEPT'
    option output 'ACCEPT'
    option forward 'ACCEPT'
    option masq '1'
    option mtu_fix '1'

# At the end of the file
config rule
    option name 'Allow Tailscale'
    option src '*'
    option target 'ACCEPT'
    option proto 'udp'
    option dest_port '41641'

config forwarding
    option src 'tailscale'
    option dest 'lan'

config forwarding
    option src 'lan'
    option dest 'tailscale'

/etc/config/network

config interface 'tailscale'
    option device 'tailscale0'  
    option proto 'none'

Raspberry Pi 4

Case Fan

see here

opkg update
opkg install kmod-hwmon-gpiofan

/boot/config.txt

# temperature in milliCelsius
dtoverlay=gpio-fan,gpiopin=14,temp=80000

Configure Wireless WAN

Configure wireless interface

/etc/config/wireless

config wifi-device 'radio0'
    option type 'mac80211'
    option path 'platform/soc/fe300000.mmcnr/mmc_host/mmc1/mmc1:0001/mmc1:0001:1'
    option channel '7'
    option band '5g'
    option htmode 'HT20'
    option hwmode '11g'
    option short_gi_40 '0'
    option disabled '0'

config wifi-iface 'wifinet1'
    option device 'radio0'
    option mode 'sta'
    option network 'wwan' # or is it lan?
    option ssid 'Lothlorien'
    option encryption 'psk2'
    option key 'EnChus81222'

Update the wifi settings on boot

/etc/rc.local

uci commit wireless
wifi

DNS Configuration

Add the last line for ip addresses

config dnsmasq
        option domainneeded '1'
        ... 
        option domain 'husovich.com'
        ...
        option ednspacket_max '1232'
        list address '/.mymedia.husovich.com/192.168.10.124'