Discard nonsense in address.c about v4-mapped addresses
Right now, some but not all places in address.c do strange contortions to treat ::ffff:1.2.3.4 as equivalent to 1.2.3.4. Instead, we should be rejecting these addresses as private, rather than trying to pretend that we support them.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information