14 Feb
2023
14 Feb
'23
9:08 p.m.
I just though that the default value for the option is enabled, but perhaps it should be enabled only if such routes are supported by platform code (i.e. enabled on Linux, but disabled on BSD, as we do not support such routes on BSD).
IMHO, it should not be possible to enable v4-via-v6 unless the platform supports it. Otherwise, you risk creating persistent blackholes. (There's also the PMTUD problem described in RFC 9229 Section 3.) -- Juliusz