In case of emergency, please consult:
http://cvsweb.netbsd.org/bsdweb.cgi/src/share/man/man4/sctp.4?only_with_tag=MAIN
http://cvsweb.allbsd.org/cvsweb.cgi/src/share/man/man4/sctp.4?cvsroot=netbsd
A raw file is available onsite:
/raw/NetBSD/share/man/man4/sctp.4
nginx/1.2.2 at bxr.su