Howdy, Does anyone happen to know why the following block of code refuses to find multicast addresses? netstat -rn | egrep \ '([2][2-3][4-9])\.([0-9]{3})\.([0-9]{3})\.([0-9]{3})' The multicast range is 224.0.0.0 to 239.255.255.255. I can also see multicast addresses in the netstat -rn output. I look forward to any thoughts or suggestions, Ryan