03-07-07 ettercap 0.6.b released. minor bugfix release 03-04-06 ettercap 0.6.a released. now we are moving to ettercap NG (0.7.0)
0.6.10 = 0.6a 0.6.11 = 0.6b
so this is invalid ;)
(I think it was done because of portage's version scheme, there can't be a 0.6b after an 0.6.7)
just try it this can be done
it was done because it is 0.6.a, it isnt 0.6a just leave it as is