Commit 233401
2026-08-17 15:36:44 Niklas Polke: Create Rename LAN connections| /dev/null .. linux/rename lan connections.md | |
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| + | # Rename LAN connections |
| + | |
| + | ## start point |
| + | |
| + | ```bash |
| + | $ ip link |
| + | 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 |
| + | link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 |
| + | 2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 |
| + | link/ether 52:77:18:93:03:d3 brd ff:ff:ff:ff:ff:ff |
| + | altname enx5277189303d3 |
| + | 3: enp1s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000 |
| + | link/ether 9a:5f:ee:af:de:20 brd ff:ff:ff:ff:ff:ff |
| + | ``` |
| + | |
| + | :::warning |
| + | `end0` and `enp1s0` are not good for human readability |
| + | ::: |
| + | |
| + | ## search for hardware paths (ID_PATH) |
| + | |
| + | ```bash |
| + | $ udevadm info /sys/class/net/end0 | grep -E 'ID_NET|ID_PATH' |
| + | E: ID_NET_DRIVER=st_gmac |
| + | E: ID_NET_NAMING_SCHEME=v257 |
| + | E: ID_NET_NAME_MAC=enx5277189303d3 |
| + | E: ID_NET_NAME_ONBOARD=end0 |
| + | E: ID_PATH=platform-fe010000.ethernet <--- |
| + | E: ID_PATH_TAG=platform-fe010000_ethernet |
| + | E: ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link |
| + | E: ID_NET_NAME=end0 |
| + | $ udevadm info /sys/class/net/enp1s0 | grep -E 'ID_NET|ID_PATH' |
| + | E: ID_NET_DRIVER=r8169 |
| + | E: ID_NET_NAMING_SCHEME=v257 |
| + | E: ID_NET_NAME_PATH=enp1s0 |
| + | E: ID_PATH=platform-3c0000000.pcie-pci-0000:01:00.0 <--- |
| + | E: ID_PATH_TAG=platform-3c0000000_pcie-pci-0000_01_00_0 |
| + | E: ID_NET_LINK_FILE=/usr/lib/systemd/network/99-default.link |
| + | E: ID_NET_NAME=enp1s0 |
| + | ``` |
| + | |
| + | ## create links |
| + | |
| + | ### wan / end0 port |
| + | ```bash |
| + | sudo nano /etc/systemd/network/10-wan0.link |
| + | ``` |
| + | ``` |
| + | [Match] |
| + | Path=platform-fe010000.ethernet |
| + | |
| + | [Link] |
| + | Name=wan0 |
| + | ``` |
| + | |
| + | ### lan / enp1s0 port |
| + | ```bash |
| + | sudo nano /etc/systemd/network/11-lan0.link |
| + | ``` |
| + | ``` |
| + | [Match] |
| + | Path=platform-3c0000000.pcie-pci-0000:01:00.0 |
| + | |
| + | [Link] |
| + | Name=lan0 |
| + | ``` |
| + | |
| + | ### change /etc/netplan/30-ethernets-dhcp.yaml |
| + | - rename `end0` to `wan0` and `enp1s0` to `lan0` |
| + | |
| + | ## test links |
| + | ```bash |
| + | sudo udevadm test-builtin net_setup_link /sys/class/net/end0 2>&1 | grep -E 'Config file|ID_NET_NAME' |
| + | sudo udevadm test-builtin net_setup_link /sys/class/net/enp1s0 2>&1 | grep -E 'Config file|ID_NET_NAME' |
| + | ``` |
| + | |
| + | ## reboot |
| + | ```bash |
| + | sudo reboot |
| + | ``` |