DHCP Assigned and Deassigned

cylent · February 9, 2011, 3:00pm

can someone help me figure out why this is happening…

i am getting messages in the log like:

dhcp1 deassigned 192.168.99.9 from
dhcp1 assigned 192.168.99.9 from

and so on…

why is this happening and how to fix it?

this is on a RB600 with RouterOS 4.16

Thanks

inertia · February 22, 2011, 4:17pm

What time is set for Lease?

cylent · February 23, 2011, 5:37am

3d 00:00:00

dadaniel · May 5, 2011, 9:32am

I have the same problem with 4.17 and RB750G.

Please help!

netadoo · May 5, 2011, 1:08pm

Hello guys.
Solution is this. Disable the DHCP pool of the hotspot server.

ie Go to ip-hotspot-servers.
Select the hotspot server u are using and change address pool to none.
This way u have only one dhcp server working.

Had similar problem once.

fewi · May 5, 2011, 2:01pm

That is the Universal 1:1 NAT pool, not a DHCP server.

katit · July 18, 2015, 2:51am

Hello!

I didn’t want to start new topic, found this one. Anything changed? I see it on v30.1 Very annoying, any reason why this might be happening?

I have some additional info. Those devices is WiFi clients. WiFi served by UniFi device connected to Mikrotik. But Unifi doesn’t do any DHCP, so I wonder..

syntxerr · September 5, 2015, 2:49am

I have the exact same thing happening with ubnt APs and RB router! Anyone have any idea whats up??

MxD · November 17, 2015, 8:02pm

I had the same problem with Mikrotik RB951G with Wi-Fi clients. The reason was a short “Lease Time” in DHCP Server settings. IP - DHCP Server - DHCP - Lease Time, I set 1d 00:00:00. Since, ther were no problem.

zBear · November 19, 2020, 7:58am

I have the same problem with my MiBox S
it’s spamming through logs and there is nothing I can do about it

for the moment I found 4 possible solutions (none of them helped me):

disable loop protect on a port
disable auto negotiation on a port and indicate correct fixed speed
disable loop protect and auto negotiation
check network mask

Skinny · May 20, 2023, 3:40pm

Check if Detect Interface List is configured to none. When this wasn’t in that option, like for example “all”, the mikrotik sometimes recognized my WAN port as a LAN port and the other way around too.

I’m using RouterOS version 6.49.7.
This is a solution that works for me: