On 2022-05-06, Florian Obser <[email protected]> wrote: > On 2022-05-06 10:28 -04, Sonic <[email protected]> wrote: >> On Fri, May 6, 2022 at 7:18 AM Florian Obser <[email protected]> wrote: >>> Also, dhcpd(8) does not even hand out option 3 when option 121 is >>> configured. >> >> That doesn't seem like correct behavior (the ISC version certainly >> offers both). Both options should be sent if configured, it's up to >> the client to properly handle this. >> Clients that are rfc3442 compliant will install the option 121 routes, >> clients that are not rfc3442 compliant will ignore option 121 and >> install the gateway supplied by option 3. If dhcpd doesn't hand out >> option 3 when option 121 is configured then clients that are not >> rfc3442 compliant will not receive a gateway address. > >> > I fully agree, I was very surprised when I discovered this > behaviour. But I haven't chased it down why this is.
It was done to work-around broken clients: https://github.com/openbsd/src/commit/3f461432d6a77eea41f084ef892403cacc2ee370
