At the moment I have a 30 line script to ensure only 1 DHCP lease can be active per Remote-ID at a time, the newest lease clears all other entries that have the same Remote-ID (potential issue if a client plugged a switch into their WAN connection instead of a router) but there's currently a bug in the script. Rather than running through it again and trying to debug, the script could be very simple if certain parameters are parsed to it from the DHCP server
At the moment it iterates through every single lease, finds the newest, then purges all others
If parsed parameters can be used then instead I could do it all on 1 line with something like
/ip dhcp-server lease remove [find where remote-id=%8 active-mac-address!=%1]
Where %1 would be the MAC address of the lease that triggered the script, %8 would be the remote-id
Is this supported in the MikroTik world?
-
-
millenium7
Long time Member
- Posts: 539
- Joined:
Re: Are special parameters parsed when script ran by DHCP server?
There is no property "remote-id". Does client's hostname do the job?At the moment I have a 30 line script to ensure only 1 DHCP lease can be active per Remote-ID at a time, the newest lease clears all other entries that have the same Remote-ID (potential issue if a client plugged a switch into their WAN connection instead of a router) but there's currently a bug in the script. Rather than running through it again and trying to debug, the script could be very simple if certain parameters are parsed to it from the DHCP server
At the moment it iterates through every single lease, finds the newest, then purges all others
If parsed parameters can be used then instead I could do it all on 1 line with something like
/ip dhcp-server lease remove [find where remote-id=%8 active-mac-address!=%1]
Where %1 would be the MAC address of the lease that triggered the script, %8 would be the remote-id
Is this supported in the MikroTik world?
Code: Select all
/ ip dhcp-server lease remove [ find where host-name=$"lease-hostname" active-mac-address!=$leaseActMAC ]-
-
millenium7
Long time Member
- Posts: 539
- Joined:
Re: Are special parameters parsed when script ran by DHCP server?
err yes there is
agent-remote-id and agent-circuit-id are parameters that are injected into DHCP request packets by another inline device, also knows as DHCP Option 82
Both are supported in MikroTik's DHCP server as read-only parameters
agent-remote-id and agent-circuit-id are parameters that are injected into DHCP request packets by another inline device, also knows as DHCP Option 82
Both are supported in MikroTik's DHCP server as read-only parameters
Re: Are special parameters parsed when script ran by DHCP server?
Well, ok... Did not try to guess the correct name. Just "remote-id" is not available.
You can get that info from $"lease-options". With ($"lease-options"->"82") you get both infos from option 82, surrounded by some binary bits. Looks like you have to parse that yourself.
You can get that info from $"lease-options". With ($"lease-options"->"82") you get both infos from option 82, surrounded by some binary bits. Looks like you have to parse that yourself.
-
-
blueknight529
just joined
- Posts: 3
- Joined:
Re: Are special parameters parsed when script ran by DHCP server?
Did you ever get this script to work?
I am in need of this, and would you be inclined to share?
I am in need of this, and would you be inclined to share?
-
-
blueknight529
just joined
- Posts: 3
- Joined:
Re: Are special parameters parsed when script ran by DHCP server?
millenium7,
I am in need of this script you mentioned above.
Did you get it to work correctly?
Would you care to share it?
I am in need of this script you mentioned above.
Did you get it to work correctly?
Would you care to share it?
Who is online
Users browsing this forum: No registered users and 22 guests