topic Re: networkd static IP lost after cable reconnection in i.MX Processors

networkd static IP lost after cable reconnection

razriel — Mon, 01 Aug 2022 11:17:16 GMT

I am using yocto distro with imx8 from NXP.
network manager is systemd-networkd.
The interface used is based on Microchip SMSC9512/9514 Fast Ethernet Adapter(USB to Ethernet chip)
I have added a file named 25-wired.network to /etc/systemd/network folder.
the file contains the following lines:
[Match]
Name=eth1
KernelCommandLine=!nfsroot

[Network]
Address=192.168.50.99/24
Gateway=192.168.50.255
DNS=8.8.8.8

[DHCPv4]
UseHostname=false

When machine boots eth1 interface is configured with the static IP as expected.
when I disconnect and connect the network calble the IP of the eth1 is lost although I can see link up in dmesg.
is there any value I should add to the *.network file for it to set the IP ? or any other way to solve this issue ?

BR,

Roy

Re: networkd static IP lost after cable reconnection

Guth55434 — Tue, 02 Aug 2022 05:07:00 GMT

use dhcpcd like below can solve this problem

dhcpcd -S ip_address=10.0.0.135 -S rounters=10.0.0.1 -S subnet_mask=255.255.255 eth0

JCPenney Kiosk Associates

Re: networkd static IP lost after cable reconnection

razriel — Mon, 01 Aug 2022 12:00:50 GMT

Thanks,

in what conf file I am supposed to set it ?

Re: networkd static IP lost after cable reconnection

Harvey021 — Wed, 03 Aug 2022 10:19:04 GMT

Hi @razriel

I do a test for the same configuration on 8QM MEK. a difference about Name=eth0, which defaults with eth0. There is no such issue of "network static IP lost after cable reconnection".

Best regards

Harvey