NaN metrics values
I don't yet have a Prometheus server polling this, but the NaN from the raw /metrics pull here seems wrong:
# TYPE bind_traffic_incoming_requests_udp4_size histogram
bind_traffic_incoming_requests_udp4_size_bucket{le="47"} 2
bind_traffic_incoming_requests_udp4_size_bucket{le="+Inf"} 2
bind_traffic_incoming_requests_udp4_size_sum NaN
bind_traffic_incoming_requests_udp4_size_count 2