On Wed, Feb 9, 2011 at 10:41 AM, Axel Dörfler <axeld@xxxxxxxxxxxxxxxx> wrote: >> /dev/net/broadcom570x/0 >> Hardware type: Ethernet, Address: 00:15:60:c0:17:a5 >> Media type: 100 MBit, 100BASE-TX >> inet addr: 10.21.16.87, Bcast: 10.255.255.255, Mask: 255.255.254.0 > > Since 10.* is a class A network, that looks correct to me. I thought broadcast address was determined by the subnet mask/bits... at least this calculator seems to indicate that it should have been 10.21.17.255: http://www.subnet-calculator.com/subnet.php?net_class=A - Urias