... > > Tap side still a mystery, but it unblocked testing. I'll figure that > > part out separately. > > Further update - the above mystery was dhclient, thanks a lot to David > for being able to figure that out very quickly. I've seen that before - on the rx side. Is there any way to defer the copy until the packet passes a filter? Or better teach dhcp to use a normal UDP socket?? David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)