[tor-bugs] #17066 [Tor]: Avoid assuming relays have a single IPv4/IPv6 address

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#17066: Avoid assuming relays have a single IPv4/IPv6 address
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 Reporter:  teor               |          Owner:
     Type:  enhancement        |         Status:  new
 Priority:  normal             |      Milestone:  Tor: 0.2.8.x-final
Component:  Tor                |        Version:  Tor: 0.2.7
 Keywords:  TorCoreTeam201510  |  Actual Points:
Parent ID:                     |         Points:
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 Many areas of the Tor codebase assume that a relay has a single IPv4
 address, or perhaps an IPv4 and an IPv6 address. Multi-homed relays may
 have many such addresses.

 Therefore, some callers of get_interface_address[6] may be able to use the
 list of addresses from the get_interface_address6_list function introduced
 in #17027.

 We should review all calls to get_interface_address and
 get_interface_address6 to see if they would benefit from using a list
 instead.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17066>
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