Option82 - question about sending sub-options

Alan DeKok alan.dekok at inkbridge.io
Thu Sep 18 14:37:37 UTC 2025


On Sep 18, 2025, at 8:55 AM, Ľudovít Mikula <ludovit.mikula at mikori.sk> wrote:
> 
> I have a question about sending Option82 - I am setting sub-options 1,2 and 9 in response to DISCOVER:
> 
>    update reply {
>        &DHCP-Relay-Remote-Id := &request:DHCP-Relay-Remote-Id
>        &DHCP-Relay-Circuit-Id := &request:DHCP-Relay-Circuit-Id
>        &DHCP-Vendor-Specific-Information := &request:DHCP-Vendor-Specific-Information
>    }
> 
> 
> and see it being set in the freeradius log:
> 
> (1702)   DHCP-Relay-Remote-Id := 0xacdb489f87af
> (1702)   DHCP-Relay-Circuit-Id := 0xacdb489f87af
> (1702)   DHCP-Vendor-Specific-Information := 0x0000118b060104010203010000061b34030a444d5a2d434f532d3032010e4554492d5250442d504f52542d300207756e69636173740e07000100000079000d040a666f07
> ...
> However the relay agent vendor requires the sub-options to be set in one Option 82 block (like they send it to us in DISCOVER):
> ..
> Is this possible (or am I doing something wrong), we're using freeradius v3.2.3 ?

  We can push a fix, but it will have to go into 3.2.9.

  Alan DeKok.




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