hello
i have mikrotik hardward, and in ether 2 is DHCP server 172.17.44.x, so Some of my devices take the IP and give it away and MAC address 00:00:00:00:00:00 and status declined
What is the reason for this problem?
Your question is vague to the point of allowing guessing only. My guess? You need to put the DHCP server on the bridge instead.
If that’s not it, post your sanitized /export output here and explain in more detail what isn’t working.
My problem is this
Now Mikrotik’s DHCP assigns an IP, rejects it after 2 seconds, gives another dedicated IP, then rejects it again. And this is running.
I don’t know where the problem is
[*]dhcp1 client AE:F3:2B:D0:37:79 declines IP address 172.17.44.181
Short of more guessing, neither do we until you post your /export output, as requested.
The log says that client rejects offer. Which most likely means that it detects IP being in use. If not all of those IP addresses are actually in use, this likely means there’s a rogue proxy-ARP device in your network (can even be router serving as DHCP server). The easiest way of trouble shooting this possibility is to run a wireshark on a DHCP client … you’d see the traffic and probably the cause for DHCP client to reject lease offer. If it’s rogue proxy-ARP device causing it, it would be possible to find MAC address of the offending device.