The netmap documentation for pkt-gen and bridge don't include the updated interface requirements.
The netmap man page gives an example interface as 'ix0' which doesn't work. It needs to be 'netmap:ix0' .
It also doesn't make clear that the way to specify a specific ring here is 'netmap:ix0-ringid'.
I think we'd make things a lot easier to get started if the documentation for the netmap interface strings was updated in both the netmap documentation and the example tools.
Man page fixed in HEAD.