LK4 don't gets DHCP address, on networks which uses dhcp-relay.
I think It's because LK4 sends DHCP packets with TTL255.
I don't know why, but some of dhcp-relay (for example our MikroTik router) drops DHCP packets which are sent with other than standard TTL128.
And if I connect the LK4 on same network/switch with the dhcp-server, (without using dhcp-relay) the problem disappears.
So, please set the DHCP packets TTL to 128 in the next firmware.
And this problem also affects tcPDU-s also.
I think It's because LK4 sends DHCP packets with TTL255.
I don't know why, but some of dhcp-relay (for example our MikroTik router) drops DHCP packets which are sent with other than standard TTL128.
And if I connect the LK4 on same network/switch with the dhcp-server, (without using dhcp-relay) the problem disappears.
So, please set the DHCP packets TTL to 128 in the next firmware.
And this problem also affects tcPDU-s also.