why not 'wlan1mon'?

[StudentOfHeisenberg]

Ah...I find that you delete the code
#sudo($airmon, "start", $interface);
Does it means that I need to enable monitor mode on wlan1 before that ? In this way, wlan1 will be wlan1mon, so why define interface as wlan1 but not wlan1mon?
Your reply will be appreciated!!

[hash3liZer]

You have to explicitly define your interfaces. Edit the file, rename your interfaces:

my $interface  = shift || "wlan1";
my $interface2 = shift || "wlan0";