[benou]

Looking at RFC1812, Martian packets [1] seems to be reserved addresses only.

What you're talking about is referred to as source address validation [2] also known as strict reverse path forwarding (RPF) [3].

[1] https://datatracker.ietf.org/doc/html/rfc1812#section-5.3.7

[2] https://datatracker.ietf.org/doc/html/rfc1812#section-5.3.8

[3] https://datatracker.ietf.org/doc/html/rfc3704#section-2.2