I could build the new version, I have the build env still available from building mbuffer-20240107-x86_64-1_SBo.tgz.
But I think this version won't give sanoid any benefit. The last version works well (on my end) and sanoid itself has not been updated (means sanoid won't require any of these changes). Maybe the IPv6 and IPv4 feature is interesting, but for home networks maybe not.