Updated navigation with new network configuration page

docs/network/setup.md

@@ -0,0 +1,36 @@
+Network configuration
+=====================
+
+Before we start configuring tunnels and routing we first need to make sure the network of the machine you wish to configure as a CRXN router is configured correctly.
+
+## Assigning addresses and a subnet
+
+TODO: Add subnet assignment
+
+## Enabling forwarding
+
+We will be setting up the machine that runs bird as a router so therefore
+we need to make your Linux kernel's network stack not drop IPv6 packets
+that it receives (addressed to it via Ethernet) but are not addressed to
+it via IPv6 address - in other words it must try do something with these packets,
+namely attempt to forward them one hop closer to their initial destination.
+
+Enabling forwarding on all interfaces can be achieved as follows (you will need
+to be root):
+
+```bash
+echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
+```
+
+However, after reboot it won't be saved and will go back to its defaults. Therefore
+what you need to do is to enable forwarding on boot-up, this can be done by
+adding an additional line to your `/etc/sysctl.conf` (which holds a bunch of
+these statements), it should look like this:
+
+```bash
+net.ipv6.conf.all.forwarding=1
+```
+
+TODO: Weird experience with me, only doing `all` made it work
+
+TODO: Forwarding settings should be placed here

mkdocs.yml

@@ -11,7 +11,6 @@ nav:
          - Registering and adding your prefix to EntityDB: registration/entitydb.md
       - Network configuration: network/setup.md
       - Routing:
-         - IPV6 Forwarding: routing/bird/forwarding.md
          - Setting up Bird: routing/bird/bird.md
             - Bird configuration: 
       - Tunneling: