option 82 circuit-id host-identifier extra leading characters in string

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option 82 circuit-id host-identifier extra leading characters in string

Greg Fausak
I have recently started using the circuit to assign ip addresses. looking at all of the examples online i don't see an issue that I had with the string itself.  It starts with a 0x01, and then it has the length of the string in the next byte, followed by the circuit id, like this:

  host hostnum1000019 {

        host-identifier option agent.circuit-id "\x01\x20myrelayswitchnamehere:Ethernet17";

        fixed-address 192.168.100.219;

  }


  host hostnum1000020 {

        host-identifier option agent.circuit-id "\x01\x20myrelayswitchnamehere:Ethernet18";

        fixed-address 192.168.100.220;

  }


this configuration here functions using isc dhcpd version 4.2.5.  i realize the leading two characters are part of the protocol, but I didn't expect to have to encode them in my host-identifier string.  Since I don't see these extra characters in any examples, is there something not set right here?

-g
--
Greg Fausak


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