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|
Networking
==========
This document describes how to configure networking on **Alice Linux** using `eiwd`/`wpa_supplicant` + `udhcpc`/`dhcpcd`.
---
Overview
--------
Alice Linux uses simple, modular networking tools:
**Link (connection)**
* LAN: automatic (cable)
* Wi-Fi: `eiwd` or `wpa_supplicant`
**IP configuration**
* `udhcpc` - BusyBox DHCP client
* `dhcpcd` - DHCP client
---
Establish Network Link
----------------------
Wired (LAN)
---------------
Bring interface up:
```
ip link set eth0 up
```
A physical cable connection is usually sufficient.
> runit service enabled later will automatically bring up the interface.
Wi-Fi
-------
Bring interface up first:
```
ip link set wlan0 up
```
> runit service enabled later will automatically bring up the interface.
Then choose ONE method:
---
**Option A: eiwd**
Install `eiwd` and `resolvconf`
```
# apkg -I eiwd resolvconf
```
To prevent iwd from scanning continuously while not connected, add the following lines to `/etc/iwd/main.conf`:
```
[Scan]
DisablePeriodicScan=true
```
To prevent iwd from destroying / recreating wireless interfaces at startup, add the following line to `[General]`;
```
UseDefaultInterface=true
```
Add network configuration.
```
# printf 'password\n' | iwd_passphrase ssid > /var/lib/iwd/<ssid>.psk
```
> The iwd daemon monitors /var/lib/iwd and automatically loads new network configurations.
Enable `eiwd` service:
```
# ln -s /etc/eiwd /var/service
```
---
**Option B: wpa_supplicant**
Install `wpa_supplicant` package.
```
# apkg -I wpa_supplicant
```
Configure `wpa_supplicant.conf`:
```
wpa_passphrase "SSID_NAME" "PASSWORD" > /etc/wpa_supplicant.conf
```
Enable `wpa_supplicant` service:
```
# ln -s /etc/wpa_supplicant /var/service
```
---
Obtain IP Address (DHCP)
------------------------
Once the interface is connected (LAN or Wi-Fi), obtain an IP address.
> This step is identical for both LAN and Wi-Fi.
---
**Option A: udhcpc (BusyBox)**
Enable `udhcpc` service:
```
# ln -s /etc/sv/udhcpc /var/service
```
> Interface and DNS settings can be adjusted in /etc/sv/udhcpc/conf.
---
**Option B: dhcpcd**
Install `dhcpcd` first:
```
# apkg -I dhcpcd
```
Enable `dhcpcd` service:
```
# ln -s /etc/sv/dhcpcd /var/service
```
---
Static Network Configuration
-----------------------------
To use a static configuration instead of DHCP:
```
# vi /etc/sv/net-static/conf
```
Set the following variables:
* IFACE
* IP
* NETMASK
* GATEWAY
```
# ln -s /etc/sv/net-static /var/service
```
---
Troubleshooting
---------------
Check interfaces:
```
ip addr
```
Test connectivity:
```
ping -c 3 8.8.8.8
```
Test DNS:
```
ping -c 3 google.com
```
---
Quick Reference
---------------
LAN (DHCP)
```
# ip link set eth0 up
# ln -s /etc/sv/udhcpc /var/service
```
Wi-Fi (iwd + DHCP)
```
# ip link set wlan0 up
# printf 'password\n' | iwd_passphrase ssid > /var/lib/iwd/<ssid>.psk
# ln -s /etc/sv/eiwd /var/service
# ln -s /etc/sv/udhcpc /var/service
```
Wi-Fi (wpa_supplicant + DHCP)
```
# ip link set wlan0 up
# wpa_passphrase "SSID" "PASS" > /etc/wpa_supplicant.conf
# ln -s /etc/sv/wpa_supplicant /var/service
# ln -s /etc/sv/udhcpc /var/service
```
|
