dhcpcd-discuss

Hi,

If I understand commit f20a30175f correctly, the new behaviour is:

  - under Linux, RAs with no usable prefixes are always honoured;
  - under BSD, RAs with no usable prefixes are always dropped.

I think there is one case where the latter point is incorrect: if the RA
is a retraction, i.e. has a Default Router Lifetime equal to 0.  In that
case, the default route should be removed (or switched to a different
router) even under BSD.

In case you're interested -- this is due to HNCP work[1], where the
Default Router Lifetime depends on the presence of a default route in the
routing protocol.

[1] https://tools.ietf.org/html/draft-ietf-homenet-hncp

Thanks,

-- Juliusz