[tor-bugs] #8218 [Tor]: Authorities mark every relay as down-for-an-hour at every restart

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#8218: Authorities mark every relay as down-for-an-hour at every restart
----------------------+-----------------------------------------------------
 Reporter:  arma      |          Owner:                    
     Type:  defect    |         Status:  new               
 Priority:  normal    |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor       |        Version:                    
 Keywords:  tor-auth  |         Parent:                    
   Points:            |   Actualpoints:                    
----------------------+-----------------------------------------------------
 In https://trac.torproject.org/projects/tor/ticket/1035#comment:40 I
 reported
 {{{
 Jul 07 14:08:27.000 [info] rep_hist_note_router_reachable(): Router
 BFA1BA13CAC96F8C13689FE1FDC65359ED6AC6D7 still seems Running, but its
 address appears to have changed since the last time it was reachable.  I'm
 going to treat it as having been down for 7200 seconds
 }}}

 I see those in practice on moria1 still:
 {{{
 $ grep -i "still seems" moria1-info|grep "Feb 12"|wc -l
 501
 }}}

 The issue is this code:
 {{{
   addr_changed = at_addr &&
     tor_addr_compare(at_addr, &hist->last_reached_addr, CMP_EXACT) != 0;
   port_changed = at_port && at_port != hist->last_reached_port;
 }}}

 where last_reached_foo always starts out empty, so the first comparison
 always shows a change.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8218>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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