[tor-commits] [torspec/master] Prop 312: Update IPv6 Privacy Extensions

[teor at torproject.org]

commit c09bbe991728cfc012f2f6d689eb9348e91b6cd6
Author: teor <teor at torproject.org>
Date:   Wed Feb 5 13:10:26 2020 +1000

    Prop 312: Update IPv6 Privacy Extensions
    
    As suggested by s7r.
    
    Part of 33073.
---
 proposals/312-relay-auto-ipv6-addr.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/proposals/312-relay-auto-ipv6-addr.txt b/proposals/312-relay-auto-ipv6-addr.txt
index cff3c77..ad7e7f4 100644
--- a/proposals/312-relay-auto-ipv6-addr.txt
+++ b/proposals/312-relay-auto-ipv6-addr.txt
@@ -1286,6 +1286,13 @@ Ticket: #33073
    applications if a particular address is using privacy extensions. So
    implementing this change may be difficult.
 
+   On operating systems that provide IPv6 address privacy extension state,
+   IPv6 addresses may be:
+     * "public" - these addresses do not change
+     * "temporary" - these addresses change due to IPv6 privacy extensions.
+   Therefore, tor should prefer "public" IPv6 addresses, when they are
+   available.
+
    However, even if we do not make this change, tor should be compatible with
    the RFC 4941 defaults:
      * a new IPv6 address is generated each day