Hi Forum,

I have RB433 (for test) with MikroTik 5.8 on it. It works as DHCP server. It is allocating IPs from this pool: Now I want to force the users to get their IPs from the DHCP server and do not allow any static allocation...

I've configured my DHCP server to add ARP for leases but it didn't work: At any time I can convert any lease to static so its MAC address in the ARP table will be bound with the IP and change its IP to something lies in another pool "Static_Pool": With this way, I can control the bandwidth of both pools for example set higher priority to the IPs that are lying in the Static Pool.

Any Suggestions to have the above scenario works normally? I believe that in MikroTik world there is nothing called "Impossible"
Thanks in advance...
Ammar

set interface so arp=reply-only and set dhcp server to add mac addresses to arp table when address is assigned. That way, you will force anyone to use DHCP settings.

set interface so arp=reply-only and set dhcp server to add mac addresses to arp table when address is assigned. That way, you will force anyone to use DHCP settings.

Totally handled the problem:
Thanks janisk.. I really appreciate your reply...

Ammar.

Sorry for bringing up this topic from the dead.

Setting 'ARP' for my DHCP server interface (in my case, it is 'bridge-local'') to 'reply-only' works fine at preventing users with static IP addresses from connecting to the network, but it also break my Hurricane Electric IPv6 tunnel routing. Is there anything I can do to prevent that from happening?

Routerboard RB751U-2HnD with RouterOS 5.11.

wait for 5.12 to be released.

Just installed 5.12, and the IPv6 lost route problem is indeed fixed. But another problem surfaced with 5.12 that doesn't happen with 5.11. If I set ARP to reply-only at bridge-local, IPv4 routes will instead lost. With this, I can only access IPv6-enabled resources and not IPv4 resources.

this also is already fixed and waiting for next release.

arp=reply-only works, but lets say I have a pool of ip's for the dhcp from 10.0.0.10 - 10.0.0.100, but the addresses 1.0.0.1/2/3/4/5/6/7/8/9 I would like to fix them on my switch or any other device on the network that I need a fixed IP.

If I forde to them use DHCp, I will not able to forthe my switch to get the 10.0.0.9 .

how can I do that ?

use static dhcp leases, that way you can assign what host gets what address. In alignment with previous topic - use feature to add ARP entry when DHCP lease is given.