Other relays seeing this too?
For sure. Here is some recent reading material:
https://lists.torproject.org/pipermail/tor-relays/2017-December/013669.html https://lists.torproject.org/pipermail/tor-relays/2017-December/013771.html https://lists.torproject.org/pipermail/tor-relays/2017-December/013839.html https://lists.torproject.org/pipermail/tor-relays/2017-December/013844.html https://lists.torproject.org/pipermail/tor-relays/2017-December/013881.html https://lists.torproject.org/pipermail/tor-relays/2017-December/013905.html