rpi-cmdline: Fix being renamed of network interfaces #1305
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kraj
requested changes
Apr 10, 2024
Add net.ifnames=0 kernel parameter into CMDLINE and make it possible to override.
If we boot the kernel this way, the network interfaces will not be renamed. Otherwise it will be renamed.
Without parameter:
root@raspberrypi3-64:~# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enu1u1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:d9:fd:59 brd ff:ff:ff:ff:ff:ff
3: wlxb827eb8ca80c: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
link/ether b8:27:eb:8c:a8:0c brd ff:ff:ff:ff:ff:ff
root@raspberrypi3-64:~# journalctl | grep wlan
Feb 27 17:26:08 raspberrypi3-64 kernel: brcmfmac mmc1:0001:1 wlxb827eb8ca80c: renamed from wlan0
Feb 27 17:26:10 raspberrypi3-64 kernel[296]: [ 8.711897] brcmfmac mmc1:0001:1 wlxb827eb8ca80c: renamed from wlan0
With parameter:
root@raspberrypi3-64:~# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:d9:fd:59 brd ff:ff:ff:ff:ff:ff
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:8c:a8:0c brd ff:ff:ff:ff:ff:ff
Signed-off-by: alperak <[email protected]>
agherzan
approved these changes
Apr 29, 2024
Yeah this is combination of latest kernel 6.1 and systemd which causes this and infact is the default behavior to use this scheme but it will take some time so for now with this patch we revert back to original behavior for now |
|
@kraj this is approved on your side too? |
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Added
net.ifnames=0kernel parameter intoCMDLINE.If we boot the kernel this way, the network interfaces will not be renamed. Otherwise it will be renamed.
Without parameter:
root@raspberrypi3-64:~# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enu1u1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:d9:fd:59 brd ff:ff:ff:ff:ff:ff
3: wlxb827eb8ca80c: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
link/ether b8:27:eb:8c:a8:0c brd ff:ff:ff:ff:ff:ff
root@raspberrypi3-64:~# journalctl | grep wlan
Feb 27 17:26:08 raspberrypi3-64 kernel: brcmfmac mmc1:0001:1 wlxb827eb8ca80c: renamed from wlan0
Feb 27 17:26:10 raspberrypi3-64 kernel[296]: [ 8.711897] brcmfmac mmc1:0001:1 wlxb827eb8ca80c: renamed from wlan0
With parameter:
root@raspberrypi3-64:~# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:d9:fd:59 brd ff:ff:ff:ff:ff:ff
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel qlen 1000
link/ether b8:27:eb:8c:a8:0c brd ff:ff:ff:ff:ff:ff