For the former log, this is encapsulated in a HAVE_NFSV4_ACLS check so if you don't actually need ACL support you can suppress this one by configuring netatalk with "--with-acls=no", build and install.

For the latter log, as far as I can tell from the code, it is a debug level log, so it should be muted if you set log level to "info" in afp.conf, for instance.

BTW the FreeNAS bug tracker is long gone, but the bug ticket is archived at https://web.archive.org/web/20150928131655/https://bugs.freenas.org/issues/8693