Hi Ben, > Is there a preferred format? > > "23 6c dc 1c 00 00 00 43" > or > "236cdc1c00000043" > or > "0x23 0x6c 0xdc 0x1c 0x00 0x00 0x00 0x43" > Or, since it can be thought of as a 64 bit number > "0x236cdc1c00000043" > > I prefer the last one. Last one is fine with me, although #2 would be fine too. I don't think it really makes a difference. Have you searched for similar use cases in the kernel tree? Not sure where I would start looking for... Thanks, -- Jean Delvare