No reply on private socket due to auth problem

Hi,

This bug was originally filed for NetworkManager here. According to the NM maintainer @thaller this is a GDBus issue.

Short summary: From time to time a GDBusServer responds with REJECTED EXTERNAL to new connections on a private socket.

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/issues/211#note_191586 provides a reproducer.

Is this a race in GDBus or is there something wrong in the reproducer / NM code?

Thanks!