Opened 7 weeks ago

#33233 assigned enhancement

Prop 312: 3.2.1. Make the Address torrc Option Support IPv6 Literals

Reported by: teor Owned by: teor
Priority: Medium Milestone: Tor: 0.4.4.x-final
Component: Core Tor/Tor Version:
Severity: Normal Keywords: ipv6, prop312
Cc: Actual Points:
Parent ID: #33049 Points: 1
Reviewer: Sponsor: Sponsor55-must


Make relays and bridges use the Address torrc option to find their IPv6 addresses.

This ticket covers the IPv6 literal case:

  1. Explicit IP addresses:
    • allow the option to be specified up to two times,
    • use the IPv4 address for IPv4,
    • use the IPv6 address for IPv6. Configuring two addresses in the same address family is a config error.
  1. Hostnames / DNS names:
    • allow the option to be specified up to two times,
    • look up the configured name,
    • use the first IPv4 and IPv6 address returned by the resolver, and Resolving multiple addresses in the same address family is not a runtime error, but only the first address from each family will be used.

It is an error to configure an Address option with a private IPv4 or IPv6
address. (If tor is configured with a custom set of directory authorities, private addresses should be allowed, with a notice-level log.)

See proposal 312, section 3.2.1, case 1:

Child Tickets

#30954enhancementclosedneelAddress torrc option is ignored if set second time for the IPv6 address

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