Advanced Sockets API

Objectives
Raw IPv6 socket manipulation
Handling IPv6 extension headers
Support other "advanced" features
path MTU manipulation, neighbor unreachability for UDP

Standards
RFC 2292
a revised version: rfc2292bis-01
still a draft (and the latest one has expired!)
incompatible with RFC2292

Compatibility issues
RFC2292 and rfc2292bis are incompatible.
deployment issue
KAME supports both RFC2292 and 2292bis, but the former is almost obsoleted.
Solaris supports 2292bis, and (perhaps) obsoletes RFC2292.
Linux does not support RFC2292, and is now implementing 2292bis.
Windows does not support the advanced API at all.
Others??