//
	// TODO one place this *can* fail is
	// - if a CNI plugin after us in the chain fails (currently, we are explicitly the last in the chain by design)
	// - the CmdAdd comes back thru here with a new IP
	// - we will never clean up that old IP that we "lost"
	// To fix this we probably need to impl CmdDel + manage our own podUID/IP mapping.
	if retErr == nil {