Triggering the external helper dialog leads sometimes to requests going over the catch-all circuit
7.0a3 with security slider on Medium
[04-29 09:49:32] Torbutton INFO: tor SOCKS: http://hpr.dogphilosophy.net/test/wav.wav via --unknown--:f3a7ec04000aee82fa3ca27677d6309b
and many, many others...
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