commit 99e11bd5de4549ce335da2013645ebd8b39d2347 Author: teor teor2345@gmail.com Date: Tue Oct 17 22:47:26 2017 -0400

Document current authority IPv6 reachability behaviour in dir-spec

This is the tor-spec part of #23870. --- dir-spec.txt | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/dir-spec.txt b/dir-spec.txt index ffbe4d3..846f7a9 100644 --- a/dir-spec.txt +++ b/dir-spec.txt @@ -2170,11 +2170,11 @@ "NoEdConsensus" if any Ed25519 key in the router's descriptor or microdesriptor does not reflect authority consensus. "Stable" if the router is suitable for long-lived circuits. - "Running" if the router is currently usable over the ORPorts that - an authority considers mandatory. Relays without this flag are - omitted from the consensus, and current clients - (since 0.2.9.4-alpha) assume that every listed relay has this - flag. + "Running" if the router is currently usable over all its published + ORPorts. (Authorities ignore IPv6 ORPorts unless configured to + check IPv6 reachability.) Relays without this flag are omitted + from the consensus, and current clients (since 0.2.9.4-alpha) + assume that every listed relay has this flag. "Valid" if the router has been 'validated'. Clients before 0.2.9.4-alpha would not use routers without this flag by default. Currently, relays without this flag are omitted @@ -2379,12 +2379,15 @@ canonically linked to its public key.

"Running" -- A router is 'Running' if the authority managed to connect to - it successfully within the last 45 minutes on the ORPorts it considers - mandatory. Since 0.2.4.x, the mandatory ORPorts are: + it successfully within the last 45 minutes on all its published ORPorts. + Authorities check reachability on: * the IPv4 ORPort in the "r" line, and * the IPv6 ORPort considered for the "a" line, if: * the router advertises at least one IPv6 ORPort, and - * AuthDirHasIPv6Connectivity 1 is set on the authority + * AuthDirHasIPv6Connectivity 1 is set on the authority. + A minority of voting authorities that set AuthDirHasIPv6Connectivity will + drop unreachable IPv6 addresses from the full consensus. But they can not + drop IPv6 addresses from microdescriptors.

"Stable" -- A router is 'Stable' if it is active, and either its Weighted MTBF is at least the median for known active routers or its Weighted MTBF