Hi. I'm trying to use Net::Telnet for multiple telnet sessions one after another. When the open($host) method fails (timeout) at the first time it will work ok. But the second or third time doesnt work!! If I run this with IP-range containing nonallocated addresses, after one timeout the next timeout will not happen at all. Is this related to SIGALARM if yes, how? Here is a little snipp: 
#!/usr/bin/perl -w
use strict;       
use Net::Telnet();

# ...
# ...

sub checkVersion {
  my $host = shift;    
  my $telnet = new Net::Telnet(Timeout => 10,
                            Prompt => '/-> $/',
                            Errmode => "return");

  if ( not $telnet->open($host) ){    
    # Telnet timeout for destination
    print "Telnet failed for address $host.\n";    
    $telnet->close;
    return 0;
  }
  # ...
}


for ( my $i = $ip_range_start; $i <= $ip_range_stop; $i++) {
  $host = "$ip_c_base.$i";    
  checkVersion($host);
}

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In reply to Net::Telnet timeout fails by JykkeDaMan

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