# process PC frames, this will fail unless the frame starts PCnn
my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
- unless (defined $pcno && $pcno >= 10 && $pcno <= 99) {
+ unless (defined $pcno && $pcno >= 10 && $pcno <= 89) { # reject PC9x messages
dbg("PCPROT: unknown protocol") if isdbg('chanerr');
return;
}