network/index: Multiple changes.

* Include text from `interface-names.md`, `static.md` and `dhcpcd.md`.
* Remove those files.
* Mention `rfkill(8)`.
* Refer to wireless subsections.
* Improve prose.
* Fix formatting.

src/SUMMARY.md

@@ -30,9 +30,6 @@
    - [Date and Time](./config/date-time.md)
    - [Kernel](./config/kernel.md)
    - [Network](./config/network/index.md)
-      - [Interface Names](./config/network/interface-names.md)
-      - [Static Configuration](./config/network/static.md)
-      - [dhcpcd](./config/network/dhcpcd.md)
       - [iptables](./config/network/iptables.md)
       - [wpa_supplicant](./config/network/wpa_supplicant.md)
       - [iwd](./config/network/iwd.md)

src/config/network/index.md

@@ -1,5 +1,59 @@
 # Network
 
-Network configuration in Void Linux can be done with different methods. The
-default installation comes with the
-[dhcpcd(8)](https://man.voidlinux.org/dhcpcd.8) service enabled.
+Network configuration in Void Linux can be done in several ways. The default
+installation comes with the [dhcpcd(8)](https://man.voidlinux.org/dhcpcd.8)
+service enabled.
+
+## Interface Names
+
+Newer versions of [udev(7)](https://man.voidlinux.org/udev.7) no longer use the
+traditional Linux naming scheme for interfaces (`eth0`, `eth0`, `wlan0`, ...).
+
+This behavior can be reverted by adding `net.ifnames=0` to the [kernel
+cmdline](../kernel.md#cmdline).
+
+## Static Configuration
+
+A simple way to configure a static network at boot is to add the necessary
+[ip(8)](https://man.voidlinux.org/ip.8) commands to the `/etc/rc.local` file:
+
+```
+ip link set dev eth0 up
+ip addr add 192.168.1.2/24 brd + dev eth0
+ip route add default via 192.168.1.1
+```
+
+## dhcpcd
+
+To run [dhcpcd(8)](https://man.voidlinux.org/dhcpcd.8) on all interfaces, enable
+the `dhcpcd` service.
+
+To run `dhcpcd` only on a specific interface, copy the `dhcpcd-eth0` service and
+modify it to match your interface:
+
+```
+$ ip link show
+1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
+    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
+        link/ether ff:ff:ff:ff:ff:ff brd ff:ff:ff:f
+# cp -R /etc/sv/dhcpcd-eth0 /etc/sv/dhcpcd-enp3s0
+# sed -i 's/eth0/enp3s0/' /etc/sv/dhcpcd-enp3s0/run
+# ln -s /etc/sv/dhcpcd-enp3s0 /var/service/
+```
+
+For more information on configuring `dhcpcd`, refer to
+[dhcpcd.conf(5)](https://man.voidlinux.org/dhcpcd.conf.5)
+
+## Wireless
+
+Before using wireless networking, use
+[rfkill(8)](https://man.voidlinux.org/rfkill.8) to check whether the relevant
+interfaces are soft- or hard-blocked.
+
+Void provides several ways to connect to wireless networks:
+
+- [wpa_supplicant](./wpa_supplicant.md)
+- [iwd](./iwd.md)
+- [NetworkManager](./networkmanager.md)
+- [ConnMan](./connman.md)