1. Purpose[edit | edit source]
This article describes how to configure the Ethernet interface.
This article provides two ways to make it:
- via ifconfig: to put quickly and temporary the Ethernet interface with static IP address.
- via systemd: to change durably the Ethernet configuration with static IP address
2. Using Ifconfig tools[edit | edit source]
- Connect an Ethernet cable and enjoy
At startup SSH daemon (sshd) and ifplugd daemon are automatically launched:
- sshd (useful to perform ssh, scp)
- ifplugd detect:
- udhcpc is launched on cable detection to retrieve an IP address,
If a DHCP server is not available, one can set the Ethernet IP adress with :
ifconfig end0 uuu.xxx.yyy.zzz
- To check if end0 and the gateway are well configured, one can type:
ifconfig route
- In the console, a log similar to the one below should be displayed:
ifconfig
end0 Link encap:Ethernet HWaddr 00:80:E1:01:39:61
inet addr:10.48.1.172 Bcast:10.48.3.255 Mask:255.255.252.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3038 (2.9 KiB) TX bytes:684 (684.0 B)
Interrupt:103
STM32MP1 # route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default lme-gw-vl802.lm 0.0.0.0 UG 10 0 0 end0
10.48.0.0 * 255.255.252.0 U 0 0 0 end0
3. Using systemd-networkd service[edit | edit source]
Systemd-networkd is a network service provided by systemd.
3.1. Ethernet interface[edit | edit source]
Systemd-networkd provides a directory on which the Ethernet interface must be configured via configuration file: /lib/systemd/network.
ls /lib/systemd/network 50-wired.network 52-static.network.static 80-container-vz.network 50-wired.network.static 80-container-host0.network 99-default.link 51-wireless.network.sample 80-container-ve.network
ST provide some configurations file:
- 50-wired.network: basic DHCP configuration for each endX ethernet interface
- 50-wired.network.static: example of basic DHCP configuration on which end0 are exclude of list
- 52-static.network.static: example of static IP configuration for end0
3.2. Configuration file[edit | edit source]
Example of configuration:
DHCP configuration;
[Match]
Name=end*
[Network]
DHCP=ipv4
Static IP configuration:
[Match] Name=end0 [Network] DNS=192.168.72.254 Address=192.168.72.2/24 Gateway=192.168.72.254
[Match]
- MACAddress= a whitespace-separated list of hardware addresses
- Name= a white-space separated list of device names or expression (e.g. end*).
- Host= the machine hostname
[NETWORK]
[Network]
- DHCP= enables the DHCP client, value can be: yes, no, ipv4, ipv6
- DHCPServer= enables the DHCP server for this configuration
- DNS= list DNS addresses in case of static configuration (you may specify several addresses)
- IPForward= configures IP packet forwarding, value can be: ipv4 or ipv6
- IPMasquerade= configures IP masquerading for the network interface. If enabled, packets forwarded from the network interface will be appear as coming from the local host. Takes a boolean argument. Implies IPForward=ipv4. Defaults to "no". Value can be yes or no.
All parameters are described on official documentation of systemd-networkd: [1]
3.3. DHCP configuration[edit | edit source]
DHCP configuration;
[Match]
Name=end*
[Network]
DHCP=ipv4
All Ethernet interface are configured with DHCP client address.
3.4. STATIC configuration[edit | edit source]
Static configuration;
Add a new file 52-static.network with the following content
(/lib/systemd/network/50-wired.network or /lib/systemd/network/52-static.network)
[Match] Name=end0 [Network] DNS=192.168.72.254 Address=192.168.72.2/24 Gateway=192.168.72.254
End0 Ethernet interface are configured with static IP address.
 Information
|
| In case of static configuration or specific configuration, please take care to not configure two time your Ethernet interface .With the static configuration example you need to exclude end0 interface of default configuration (here 50-wired.network) |
Exclude end0 from default Ethernet configuration:
Change the file 50-wired.network (or 80-wired.network) with the following content
(/lib/systemd/network/50-wired.network or /lib/systemd/network/80-wired.network)
[Match]
Name=end[1-9]
[Network]
DHCP=ipv4
3.5. DHCP Server configuration[edit | edit source]
DHCP server example:
[Match] Name=end0 [Network] Address=192.168.72.1/24 DHCPServer=yes IPForward=ipv4 IPMasquerade=yes
4. References[edit | edit source]