cannot listen on ipv6 address

[martinetd]

Hi,

not really expecting much, but since there were no other issues about it I'll open one for others looking at the error.

Trying to listen to an ipv6 address fails with Address family not supported, because down the stack python's wsgi/http.server defaults to AF_INET.
This isn't configurable at tor eporter's level if you with to use prometheus' web server though, but they've had multiple issues for a while ( prometheus/client_python#69 from 2015! closed without fixes, and more recently prometheus/client_python#567 with more details but not much progress, prometheus/client_python#132 with a workaround in the prometheus client code...) - they seem to advise not using their web server for real applications? :|

Their wsgi actually does quite some work so I wouldn't necessarily recommend moving away from it at this point, just raising awareness...

[martinetd]

fixed upstream just now.