> Eric Leblond wrote: > >>Has somebody realyy manage to use the examples given when using negative >>offset in u32 ? > > > Decimal Ofs Description > ----------------------------------- > -14: DST MAC, 6 bytes > -8: SRC MAC, 6 bytes > -2: Eth PROTO, 2 bytes, eg. ETH_P_IP > 0: Protocol header (IP Header) Yes I try these one. But I was unable to get them working. So I look at the kernel code and find that's it is (for me) impossible to access these fields BR -- Eric Leblond courriel : eric@regit.org Computer are like air conditionners, they don't work when windows are open.