Tailscale in a Proxmox lxc container

Allow container to have tunnel access

nano /etc/pve/lxc/lxc_container_name.conf
 
# PVE >= 7.0
lxc.cgroup2.devices.allow: c 10:200 rwm
lxc.mount.entry: /dev/net dev/net none bind,create=dir
# PVE < 7.0
lxc.cgroup.devices.allow: c 10:200 rwm
lxc.mount.entry: /dev/net dev/net none bind,create=dir
 
chown 100000:100000 /dev/net/tun
 
pct start lxc_container_name

references: https://pve.proxmox.com/wiki/OpenVPN_in_LXC

curl -fsSL https://tailscale.com/install.sh | sh
 
# add devices:
tailscale login <registration email>
tailscale up
 
# add subnet to devices:
tailscale set --advertise-routes=xxx.xxx.xxx.0/24
 
# accept routes
tailscale up --accept-routes

Edit route settings

Subnet routes:

[x] xxx.xxx.xxx.0/24