I observe the same thing with repeated DHCP requests from both flic hubs I am running. I run a regular debian based isc-dhcp daemon on the server, and no issues except for flic hubs. Something is strange with the flic hub implementation. @Emil: can you elaborate on what flic hub expects? Is it possible that flic hubs expects an answer from the Wifi router? In my case, and possibly in yea's case, the DHCPD is running on a different machine, so the MAC address could be different. Here an example: Jan 6 16:31:22 xxx dhcpd[6493]: DHCPREQUEST for 192.168.2.240 from 76:ee:2a:9c:c8:38 via enp0s31f6 Jan 6 16:31:22 xxx dhcpd[6493]: DHCPACK on 192.168.2.240 to 76:ee:2a:9c:c8:38 via enp0s31f6 Jan 6 16:32:26 xxx dhcpd[6493]: DHCPREQUEST for 192.168.2.240 from 76:ee:2a:9c:c8:38 via enp0s31f6 Jan 6 16:32:26 xxx dhcpd[6493]: DHCPACK on 192.168.2.240 to 76:ee:2a:9c:c8:38 via enp0s31f6 The DHCPACK comes right away. Is it possible, that the server is to fast for flic hub to get the message? Thanks for any pointer. It is really annoying to see all this internal traffic.