On Thu, Jan 14, 2010 at 5:50 PM, Guy Harris <[email protected]> wrote: > > On Jan 14, 2010, at 5:45 PM, David Crowcroft wrote: > >> It looks like you either forgot to attach the files, or majordomo >> stripped them off your e-mail. > > The latter. > >> (plese resend them off-list to me, if necessary). > > Will do. > >>>> For instance, do I need to calculate the FCS in the Ethernet frames I >>>> send? >>> >>> *Probably* not, at least in most cases. >> >> Is there a portable way of deciding whether I *need* to do it? > > No. I don't even know whether there are any platforms where you do.
While I can't say for certain such platforms don't exist, I can say I haven't seen the need to do so any platform in the last 10 years- including embedded systems used on the ISS (as in International Space Station). So unless you're coding for something really really obscure/obsolete I wouldn't worry about manually providing the FCS. -- Aaron Turner http://synfin.net/ http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin "carpe diem quam minimum credula postero" - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
