Dir mirrors pull from v2 authorities, not v3 authorities
When running a private Tor network, one needs to provide at least one v2 authority so that the network can successfully bootstrap. Otherwise, what happens is this:
The authorities make a consensus correctly and bootstrap successfully afterwards. All relays (including directory mirrors) try to fetch descriptors from directory mirrors, never asking any of the v3 authorities for them. This obviously fails, as nobody has any descriptors. Let's hope dizum and tor26 don't fail ;)
[Automatically added by flyspray2trac: Operating System: All]