public int CompareTo(object obj)
{
IP comp = (IP)obj;
int result = P1.CompareTo(comp.P1);
if (result != 0)
{
return(result);
}
result = P2.CompareTo(comp.P2);
if (result != 0)
{
return(result);
}
result = P3.CompareTo(comp.P3);
if (result != 0)
{
return(result);
}
result = P4.CompareTo(comp.P4);
return(result);
}