This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
- inet_ntoa() returns a pointer to a static buffer, dont use it twice
in the same printf().
- prevent the possibility of never timing out
- Report two more ICMP error types (prohibited nets etc)
And some (commented out) enhancements that I use, but some don't like.
