Russ

Thanks for responding so quickly. Addressing your points in turn... "Raising a PR"...yes I can have a go at this, but may be a while before I find a window...

@9prady9 Thanks for clarifying "log such duplicate addition". I think I understand now...simply log using AF_TRACE. I mistakenly assumed that you meant return an error code to the caller.

@9prady9 I agree that the suggestion by @umar456 is a better approach and support its inclusion asap. Since the timeline wasn't clear, my proposal above was intended as a simple...

Great, thanks Jeremy.