PavelJurasek

#!/bin/bash

for f in `cat $1`; do
	ping -c 1 -W 500 $f > /dev/null
	rc=$?
	if [[ rc -eq 2 ]]; then
		echo $f;
	fi;
done;

PavelJurasek

	m(x) = x^8 + x^4 + x^3 + x + 1
	a = 06 => x^2 + x
	b = 2E => x^5 + x^3 + x^2 + x
	
	a + b = x^5 + x^3 + 2x^2 + 2x 
		  = x^5 + x^3
	
	a * b = x^7 + x^6 + x^5 + 2x^4 + 2x^3 + x^2 
		  = x^7 + x^6 + x^5 + x^2