topic Re: how to remove(or disable) dhcp_client executable in yocto image? in i.MX Processors

how to remove(or disable) dhcp_client executable in yocto image?

gonewithwind-peter — Tue, 31 Aug 2021 14:48:36 GMT

hi all,

I use imx8 maaxboard (yocto sumo & zues branch) iwave board(yocto zues branch),

for our app, we do not need to get ip address from DHCP_server(routers), we set static IP address(or vlan ip address), but when we connect to a router, it always obtain a IP address from the router to make our code error.

so how to disable dhcp_clinet in linux (yocto sumo and zues) or directly remove dhcp_client executable from yocto local.conf?

we try to change /etc/systemd/network/99-default.link

[Network]
DHCP=no

it seems can not work well.

Thank you.

Re: how to remove(or disable) dhcp_client executable in yocto image?

jimmychan — Wed, 01 Sep 2021 08:49:25 GMT

I think it depend on the configuration of the system you used on your board. You may check 'ps aux' if there is any dhcp client running. Or add a fix IP in your network interface setting in system .. etc.

Re: how to remove(or disable) dhcp_client executable in yocto image?

BiyongSUN — Wed, 01 Sep 2021 09:14:26 GMT

you need to change the systemd

It is systemd knowledge, not imx.

https://www.freedesktop.org/software/systemd/man/systemd-networkd.service.html

/etc/systemd/network/wired.network
[Match]
Name=eth0

[Network]
Address=10.10.10.10/24
Gateway=10.10.10.1
#DHCP=yes #no, yes, ipv4, ipv6
# KeepConfiguration=static ifconfig ip and not using the ip in config file.

L5.4
/etc/systemd/network/80-wired.network

[Match]
Name=eth0

[Network]

Address=10.10.10.10/24
Gateway=10.10.10.1
#DHCP=yes #no, yes, ipv4, ipv6

# KeepConfiguration=static ifconfig ip and not using the ip in config file.