I try to install module through cpan - and receive: module LWP failed with code500 And also I try with my program ( pl converted to exe) which worked well on Ethernet, and through modem it failed on lines: my $sock = new LWP::Socket();  die "Can't bind a socket" unless $sock->bind('127.0.0.1', '8080');

impossible to open socket when modem is found on PC.