[id=0 @ 0] : IP address "3.3.3.3" corresponds to device "core". 
Thread 1 terminated abnormally: Not a CODE reference at ./dev_ithread.pl line 23.
[id=0 @ 1] : IP address "5.5.5.5" corresponds to device "border". 
Thread 2 terminated abnormally: Not a CODE reference at ./dev_ithread.pl line 23.