Hello.
We faced a problem with some old equipment.
We use host database for host reservation
We make reservation via API.
In table "host" we use dhcp_identifier_type =2 to match circuit id.
It works but we have some old equipment that adds some kind of prefix to 
circuit id option.
For example, on switch circuit id was configured to "CHN540579" but on packet 
capture we see that switch adds some "prefix"

Part from capture:
Agent-Information Option 82, length 23:
              Circuit-ID SubOption 1, length 11: ^A^ICHN540579

Question: is it possible to globally cut circuit id optin from end to 9 
characters?

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