We (i.e. my colleague Dave Taht) got this to work in Linux several years ago. If you have a Linux kernel since 5.2, you can use 0.0.0.0/8 (except 0.0.0.0 itself

We (i.e. my colleague Dave Taht) got this to work in Linux several years ago. If you have a Linux kernel since 5.2, you can use 0.0.0.0/8 (except 0.0.0.0 itself) as an ordinary IPv4 network.