DHCP Option Matcher 82

[wavespan]

Mikrotik will you ever add the ability to use DHCP Option Matcher with Relay Agent Information Options 82.1 82.2 ?

Would really make assigning specific IP’s to devices on specific switch ports !

[jspool]

We can hope… https://youtu.be/Gb7poHQuMWg?t=8

[wavespan]

It does work!

If you enable DHCP logging, you'll see the parameter "Relay-agent-info" received with a DHCP request.

When creating the DHCP matcher convert the "Relay-agent-info" value to a hexadecimal notation.

/ip dhcp-server matcher add address-pool=pool1 code=82 name=test server=dhcp1 value=0x01104D696B726F54696B2065746820302F320206657468657232

[kristapsc]

This is solved since 7.21

How to configure "option 82" on the same Mikrotik router?

Since 7.21 it is possible to specify Agent Remote Id and Agent Circuit Id for DHCP leases. These parameters work similarly to Client ID parameter- the server will use the lease for a request if those parameters match. You could also set Dynamic Lease Identifiers to Option 82 in DHCP server. then the newly created dynamic lease will be populated with those Option 82 parameters only. This is useful when you don’t want to trust the values generated by clients.