- * Per address family routines. Hash returns hash key based
- * on address; netmatch verifies net # matching, output interprets
- * an address in preparation for sending; portmatch interprets
- * an address in verifying incoming packets were sent from the
- * appropriate port; checkhost is used to decide whether an
- * address is for a host, or for a network (e.g. broadcast);
- * canon purges any extraneous stuff from a sender's address
- * before pattern matching is performed (e.g. Internet ports).