filtered ring names are not readable
Since !23 (closed) got merged ring names look like frozenset({<function bySubring.<locals>._bySubring at 0x7ba09d305c10>, <function byIPv.<locals>._byIPv at 0x7ba0a63d1dc0>})
. Before the merge they were the ring name: moat, https, email, ...
Somewhere the name is being messed up.