set service dhcp-server dynamic-dns-update
set service dhcp-server hostfile-update
set service dhcp-server shared-network-name LAN authoritative
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 default-router '192.168.1.1'
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 domain-name 'home'
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 name-server '192.168.1.1'
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 range 0 start '192.168.1.120'
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 range 0 stop '192.168.1.230'
set service dhcp-server shared-network-name LAN subnet 192.168.1.0/24 static-mapping ...
...

I also notice that ddclient has a similar problem.

ddclient[1710]: FAILED:   Unable to obtain information for 'pppoe0' -- missing ip or ifconfig command

This might be a problem that's specific to me. I don't know why every systemd start too early.

Previous PR by @hensur (Thanks) https://github.com/vyos/vyos-1x/pull/1147 but will be superseeded with a new PR based on all the latest XML/Python features

Indeed, the dhcp server wasn't working so I assume that kea doesn't start, my bad, it did start, but it failed to start, after failing for 5 attempts.

In T3316#167384, @sdev wrote:

In T3316#167382, @indrajitr wrote:

• with set service dhcp-server hostfile-update the file /etc/hosts doesn't get update with any entry from dhcp at all

Thanks, will investigate this.

@sdev, this will require adjusting on-dhcp-event.sh. I have a hacky local version that writes to /etc/hosts that partially works -- the $domain part is not picked up (which I suspect could be related to how kea-dhcp4.conf is generating the FQDN).

Do you want me to raise a draft PR for you to review?

By all means, thank you!

In T3316#167382, @indrajitr wrote:

• with set service dhcp-server hostfile-update the file /etc/hosts doesn't get update with any entry from dhcp at all

Thanks, will investigate this.

@sdev, this will require adjusting on-dhcp-event.sh. I have a hacky local version that writes to /etc/hosts that partially works -- the $domain part is not picked up (which I suspect could be related to how kea-dhcp4.conf is generating the FQDN).

Do you want me to raise a draft PR for you to review?

Update PR: https://github.com/vyos/vyos-1x/pull/2646

• with set service dhcp-server hostfile-update the file /etc/hosts doesn't get update with any entry from dhcp at all

Thanks, will investigate this.

@Zen3515

• dhcp server doesn't start automatically after reboot, and due to the next problem, I'm forced to use set service dhcp-server disable then delete service dhcp-server disable after each boot

Could not reproduce this:

Welcome to VyOS - vyos ttyS0
...
vyos@vyos:~$ ps aux | grep kea
_kea        1818  1.6  0.9  67384 20324 ?        Ssl  00:14   0:00 /usr/sbin/kea-dhcp4 -c /run/kea/kea-dhcp4.conf

Yes, if I remove the container, and then as root create the container using the exact same podman command that VyOS had used, but just add the --ip6 definition, then the container is created and responds on that ip.