Share wifi over ethenet | arch linux

arch-wlan-to-eth.sh

# PC2 <---eth cable--- PC1 <-- ((( wifi )))

# connect as root on PC1
su

# install networkmanager
pacman -S networkmanager

# enable networkmanager and start it
systemctl start NetworkManager
systemctl enable NetworkManager

# connect the two devices using ethernet

# open networkmanager to connect to the wifi you want to share
nmtui

# install dnsmasq so you can share wifi
pacman -S dnsmasq

# create a new shared ethernet connection
nmtui # > add new connection > ethernet > shared

# try adding the ip address manually on PC2 if you face problems.

For me I had to do nmuti > edit a connection > wired connection > edit > IPv4 > shared. I also set IPv6 to ignore although IDK if that's necessary