[systemd-devel] DHCPServer SendOption 121 classless static route

Adam Nielsen a.nielsen at shikadi.net
Wed Nov 20 09:00:17 UTC 2024


> How would I go about sending the DHCP server option 121 - classless static
> route?
> 
> https://datatracker.ietf.org/doc/html/rfc3442
> 
> The datatypes for SendOption are uint8, uint16, uint32, ipv4address,
> ipv6address, and string.
> 
> I tried a few different types and combinations. They either fail during
> parsing or just send the wrong information (checked with tcpdump).
> 
> As I understand it, I would need something like an uint8 array.

The manpage says you can use C-style escapes, so can you send the value
as a string?  For example "\x01\x02\xFF" etc?

Cheers,
Adam.


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