I have configured my network on hotspot. useing DHCP. every things working fine. clients was getting ip from hotspot mikrotik os.

but today i got an isue. some1 attach wireless router on the network with enable DHCP. and after attaching that router with my network. it intrupts the whole network.

when client turned on there pc that wireless router assign the ip. instead mikrotik server assign the ip.

so is there any solution to make dead all other DHCP attached on the network with mikrotik router os?

There is no solution with a mikrotik or any other layer3 device. The only solution is to setup your layer2 network in such a way as to either eliminate this problem or reduce how many people it can affect. Managed switches with port isolation or VLANs, and access points with client isolation.

It'not possible that one DHCP server blocks another in LAN environment and stations attached to AP are very similar to LAN. You can help yourself by running alert when some foreign DHCP appear and block client device completely until she stops DHCP.

http://www.datasnipers.net/v2/phpBB3/vi ... f=26&t=127

thx to all for replying me.