refactor: simplify fastdp initialisation
refactor: simplify fastdp initialisation

weaveworks/weave,rade/weave,weaveworks/weave,n054/weave,dpw/weave,tomwilkie/weave,paulbellamy/weave,rade/weave,tomwilkie/weave,dpw/weave,paulbellamy/weave,paulbellamy/weave,dpw/weave,tomwilkie/weave,tomwilkie/weave,n054/weave,weaveworks/weave,dpw/weave,tomwilkie/weave,dpw/weave,rade/weave,paulbellamy/weave,rade/weave,weaveworks/weave,n054/weave,rade/weave,n054/weave,n054/weave