# Picks on 2025-11-28
**Created**:: [[2025-11-28]]
## IP forwarding via TUN device—two missing steps for Arch Linux:
1\. Enable forwarding:
```
sudo tee /etc/sysctl.d/30-ipforward.conf <<EOF
net.ipv4.ip_forward = 1
net.ipv4.conf.all.forwarding = 1
net.ipv6.conf.all.forwarding = 1
EOF
sudo sysctl --system
```
2\. Open firewall:
```
sudo ufw allow in on tun0
```