perl-5.6.0-12 includes chat2.pl and ftp.pl that both require sys/socket.ph, however sys/socket.ph is not included in the RPM. It was included, for example, with 5.00503-12 in RH 6.2 updates... Additionally, h2ph produces a file with syntax errors when ran on sys/socket.h P.S. Bug #90 and bug #2297 describe problems with sys/socket.ph on RedHat 5.2.
This problem still exists in Enigma
.ph files are included for backwards compability but are not supported. this may be addressed in future releases as time permits.