Hi,

I'm using RB450g, RouterOS 5.12. I'm configure my mikrotik as a DHCP server but problem is the leased IP being change several times for several workstation. This incident happened 4-5 times so far. As a result the queue already I'm created is not running practically. I'm re-configure this DHCP 2-3 times but same result found. But if I use a normal broadband router then all is perfectly OK.

I can't understand where the problem is? Is there a bug in RouterOS? any help/suggestion is appreciate.

I have had trobble using DHCP in 5.x. Try to Upgrade to newest 5.X software (5.22?) or downgrade to 4.17 if the newest 5.x dont not help.

If still problems, try to bound the mac address to some IP. Then it should not change (unless Your Device Inside change mac addess.)

Did you use the DHCP setup or try to configure it manually?

also try to use a lease time big enough (routeros default is 3 days and it's working good for me) and a good ups.
before 5.22 there was a problem with dynamic assigned ip's that if the router lost power the dhcp server would loose the dynamic assignments and the ip's would change, sometimes even assign one ip to two clients.

also try to use a lease time big enough (routeros default is 3 days and it's working good for me) and a good ups.
before 5.22 there was a problem with dynamic assigned ip's that if the router lost power the dhcp server would loose the dynamic assignments and the ip's would change, sometimes even assign one ip to two clients.

The same things happened with me. Me also use by default 3 days lease time. But the only thing is I'm still using 5.12 version

Did you use the DHCP setup or try to configure it manually?

I've used DHCP setup.