- port range check need to be done before htons. from deraadt
- %d/%u audit
- correct bad practice in the code - it uses two changing variables
to manage buffer (buf and buflen). we eliminate buflen and use
fixed point (ep) as the ending pointer.
- use snprintf, not sprintf
- pass correct name into q.name. from lukem@netbsd
- sync comment
Obtained from: KAME
MFC after: 1 week
dd521ef192