Merge pull request #2 from zhoreeq/wg-systemd-guide

Added wireguard+systemd-networkd connection guide

docs/wireguard-systemd-networkd.md

@@ -0,0 +1,61 @@
+# How to connect to CRXN with wireguard and systemd-networkd
+
+1) Generate the private key:
+
+```
+wg genkey | sudo tee /etc/systemd/network/crxn0-private.key
+chmod 600 /etc/systemd/network/crxn0-private.key
+```
+
+2) Get the public key from it (you will need to send that to deavmi):
+
+```
+sudo cat /etc/systemd/network/crxn0-private.key | wg pubkey
+```
+
+3) Configure a new wireguard device:
+
+```
+sudo cat > /etc/systemd/network/crxn0.netdev <<EOF
+[NetDev]
+Name = crxn0
+Kind = wireguard
+Description = wg peering with crxn over yggdrasil
+
+[WireGuard]
+PrivateKeyFile = /etc/systemd/network/crxn0-private.key
+ListenPort = 51820
+
+[WireGuardPeer]
+PublicKey = e0zNJwCyP+sD5oiF0QAkzrM3rJpmg1NeGxEHVCfBClM=
+AllowedIPs = fd00::/8
+Endpoint = [301:754:2ca2:57f8::1]:51820
+EOF
+```
+
+4) Create the crxn network configuration file:
+
+```
+sudo cat > /etc/systemd/network/20-crxn0.network <<EOF
+[Match]
+Name=crxn0
+
+[Network]
+IPv6AcceptRA=false
+
+[Address]
+## Uncomment and change this to your IP address
+# Address=fdf1:1dc1:f54d:0001::1/64 # CHANGE THIS !!!!
+## Uncomment to route packets from another interface, ie eth0
+# AddPrefixRoute=false
+
+[Route]
+Destination=fd00::/8
+EOF
+```
+
+5) Restart the service to apply all settings:
+
+```
+sudo systemctl restart systemd-networkd
+```