On Mon, Jan 26, 2009 at 04:25:33PM -0500, der Mouse wrote: > How much of a pain would it be to grow it? struct ifnet is prepared > for it; if_flags is 32-bit-aligned and the next field after it is a pad > field. As long as you add a second field, it should not be a problem. If you want to make if_flags itself 32bit, you have to deal with endianess, don't you? Joerg