[tor-relays] why are some exit IPs missing from Exit IP DB?

[starlight.2015q3 at binnacle.cx]

At 22:57 10/11/2015 +1100, Tim Wilson-Brown - teor wrote:
>>Such "non declared" exit IP addresses (OR IP != exit IP) are found by
>>exiting through every single exit relay to detect its exit IP.
>>
>>Since exits can change their exit IP address at any time the exit list
>>can never be 100% accurate by design.
>>
>><https://collector.torproject.org/formats.html#exit-lists>https://collector.torproject.org/formats.html#exit-lists
>
>Isn't this a bug in TorCheck?
>It assumes that every relay has its ORPort IP as its Exit IP (OutboundBindAddress), and most likely also assumes that each exit only has one IP.


I opened one a few days ago:

#17297: TorCheck fails on new exit egress IP not in exit DB, confusing to user
https://trac.torproject.org/projects/tor/ticket/17297