:mod:`ipaddress` module no longer accepts any leading zeros in IPv4 address
strings. Leading zeros are ambiguous and interpreted as octal notation by
some libraries. For example the legacy function :func:`socket.inet_aton`
-treats leading zeros as octal notatation. glibc implementation of modern
+treats leading zeros as octal notation. glibc implementation of modern
:func:`~socket.inet_pton` does not accept any leading zeros. For a while the
:mod:`ipaddress` module used to accept ambiguous leading zeros.