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Re: [tor-bugs] #33235 [Core Tor/Tor]: Proposal 312: 3.2.1. Test Address torrc Option Configurations
#33235: Proposal 312: 3.2.1. Test Address torrc Option Configurations
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Reporter: teor | Owner: teor
Type: task | Status: assigned
Priority: Medium | Milestone: Tor: 0.4.4.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: prop312, ipv6 | Actual Points:
Parent ID: #33049 | Points: 1
Reviewer: | Sponsor: Sponsor55-must
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Old description:
> Once we have implemented IPv6 Addresses in #33233, and automatic IPv6
> ORPorts in #33246, tor should support the following Address
> configurations:
> A. IPv4 Address / hostname (for IPv6 only),
> B. IPv6 Address / hostname (for IPv4 only),
> C. IPv4 Address only / try to guess IPv6, then check its reachability
> (see section 4.3.1 in [Proposal 311: Relay IPv6 Reachability]), and
> D. IPv6 Address only / guess IPv4, then its reachability must succeed.
> There are also similar configurations where a hostname is configured, but
> it only provides IPv4 or IPv6 addresses.
>
> Combination C is the most common legacy configuration. We want to
> support the following outcomes for legacy configurations:
> * automatic upgrades to guessed and reachable IPv6 addresses,
> * continuing to operate on IPv4 when the IPv6 address can't be guessed,
> and
> * continuing to operate on IPv4 when the IPv6 address has been guessed,
> but it is unreachable.
>
> See proposal 312, section 3.2.1, testing notes:
> https://gitweb.torproject.org/torspec.git/tree/proposals/312-relay-auto-
> ipv6-addr.txt#n270
New description:
This ticket depends on IPv6 Addresses in #33233, and automatic IPv6
ORPorts in #33246.
We should support the following combinations of address literals and
hostnames:
Legacy configurations:
A. No configured Address option
B. Address IPv4 literal
C. Address hostname (use IPv4 and IPv6 DNS addresses)
New configurations:
D. Address IPv6 literal
E. Address IPv4 literal / Address IPv6 literal
F. Address hostname / Address hostname (use IPv4 and IPv6 DNS addresses)
G. Address IPv4 literal / Address hostname (only use IPv6 DNS addresses)
H. Address hostname (only use IPv4 DNS addresses) / Address IPv6 literal
If we can't find an IPv4 or IPv6 address using the configured Address
options:
* No IPv4: guess IPv4, and its reachability must succeed.
* No IPv6: guess IPv6, publish if reachability succeeds.
Combinations A and B are the most common legacy configurations. We want to
support the following outcomes for all legacy configurations:
* automatic upgrades to guessed and reachable IPv6 addresses,
* continuing to operate on IPv4 when the IPv6 address can't be guessed,
and
* continuing to operate on IPv4 when the IPv6 address has been guessed,
but it is unreachable.
See proposal 312, section 3.2.1, testing notes:
https://gitweb.torproject.org/torspec.git/tree/proposals/312-relay-auto-
ipv6-addr.txt#n270
--
Comment (by teor):
Update proposal and ticket.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33235#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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