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I have configured systemd-networkd to setup my networking, I have created vlan10 and i want to client send hostname to DHCP to register in my DDNS server so question is does networkd support DHCP_HOSTNAME= option? 

[root@localhost network]# cat vlan10.network [Match] Name=vlan10 [Network] DHCP=yes

I have multiple VLAN and i want to send two different vlan hostname to dhcp server to register them in DNS for example

vlan10 will send hostname foo.vlan10.example.com

vlan 20 will send hostname foo.vlan20.examplee.com

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Since systemd 223 you can do this. It introduces two options for systemd-networkd

SendHostname= When true (the default), the machine's hostname will be sent to the DHCP server.

Hostname= Use this value for the hostname which is sent to the DHCP server, instead of machine's hostname.

Options must be set in [DHCP] section in your .network file. So from your example vlan10.network should look like

[Match] Name=vlan10 [Network] DHCP=yes [DHCP] SendHostname=True Hostname=foo.vlan10.example.com
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  • I am using 219 version on CentOS7 :( that is the problem i think... I have tired to upgrade systemd on centOS7 but it throwing bunch of dependencies Commented Jun 29, 2018 at 15:43
  • This worked for me, but I had to make sure it was in this .network file: /run/systemd/network/10-netplan-eth0.network Commented Nov 5, 2024 at 21:14

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