From: Stephen Hemminger > Sent: 31 July 2022 20:06 > To: netdev@xxxxxxxxxxxxxxx > > Decnet is an obsolete network protocol that receives more attention > from kernel janitors than users. It belongs in computer protocol > history museum not in Linux kernel. > > It has been Orphaned in kernel since 2010. > And the documentation link on Sourceforge says it is abandoned there. It was pretty much obsolete when I was writing ethernet drivers in the early 1990's. Sort of surprising support ever got into Linux in the first place! Remember it requires the ethernet MAC address be set to a locally assigned value that is the machine's 'node number'. Does this remove some/most/all of the [gs]et_sockopt() calls where the length is ignored/ David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)