+As of OpenSSH 4.0, configure will attempt to detect if your version
+and maintenance level of AIX has a working getaddrinfo, and will use it
+if found. This will enable IPv6 support. If for some reason configure
+gets it wrong, or if you want to build binaries to work on earlier MLs
+than the build host then you can add "-DBROKEN_GETADDRINFO" to CFLAGS
+to force the previous IPv4-only behaviour.
+
+IPv6 known to work: 5.1ML7 5.2ML2 5.2ML5
+IPv6 known broken: 4.3.3ML11 5.1ML4
+
+If you wish to use dynamic libraries that aren't in the normal system
+locations (eg IBM's OpenSSL and zlib packages) then you will need to
+define the environment variable blibpath before running configure, eg
+
+blibpath=/lib:/usr/lib:/opt/freeware/lib ./configure \
+ --with-ssl-dir=/opt/freeware --with-zlib=/opt/freeware
+
+If sshd is built with the WITH_AIXAUTHENTICATE option (which is enabled
+by default) then sshd checks that users are permitted via the
+loginrestrictions() function, in particular that the user has the
+"rlogin" attribute set. This check is not done for the root account,
+instead the PermitRootLogin setting in sshd_config is used.
+