Maciej Żenczykowski <zenczykowski@xxxxxxxxx> wrote: > > You could try this: > > > > tcp option @34,8,8 == 34 > > So this seems to mean @number(34),offset(8),length(8) == 34 > And I understand the idea, but don't understand where the two 8's are > coming from. Yes, its wrong, it should be 0,8 as you found out. > Is this counting bits? bytes? Bits. > Furthermore, I realized that really mangle postrouting 'reset tcp > option fastopen' is a better solution to my particular problem. Ah, yes, that will nop it out.