darcs patch: Implementation of aton and ntoa outside the IO monad

Sun Sep 24 10:06:48 JST 2006 Robert Marlow * Implementation of aton and ntoa outside the IO monad inet_ntoa and inet_aton can be implemented purely to avoid the need for the IO monad. Additionally, inet_addr is currently incorrect due to using the inet_addr C function which is considered obsolete due to incorrectly failing while converting 255.255.255.255 as an address.