0.0.0.0 can represent any address. This function checks whether this address is 0.0.0.0.
$(D_KEYWORD true) if this is an unspecified address, $(D_KEYWORD false) otherwise.
assert(address4("0.0.0.0").get.isAny());
See Implementation
0.0.0.0 can represent any address. This function checks whether this address is 0.0.0.0.