Support for Appeltalk (sys/netatalk) was removed about 3 years ago but netintro(4) still mentions it.
Remi Index: netintro.4 =================================================================== RCS file: /cvs/src/share/man/man4/netintro.4,v retrieving revision 1.44 diff -u -p -r1.44 netintro.4 --- netintro.4 9 May 2014 06:37:38 -0000 1.44 +++ netintro.4 30 May 2014 06:31:06 -0000 @@ -123,7 +123,6 @@ modifier. .Sh PROTOCOLS The system currently supports the Internet protocols (IPv4 and IPv6), -Appletalk, and a few others. Raw socket interfaces are provided to the .Tn IP
