* POSIX also specifies in6 availability in in.h, not just RFCs.
* Drop IPPORT_USERRESERVED. It's in RFC 1700, but FreeBSD and musl
do not define it, and OpenBSD and NetBSD disagree on its value
(the RFC says 5000, while OpenBSD used this "49151" starting
in 1998.)
* Organize the remainder with clear indications of what RFC defined them
(if indeed they were specified in an RFC.)
* Drop "helpful macros"; they're guarded by _KERNEL on OpenBSD.
Change-Id: Ia20be56398130ee22d70b38ee25a3f609b567c3b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9398
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Jérôme Duval <[email protected]>