tor/changes/ticket33220

  o Major features (relay, IPv6):
    - When a relay with IPv6 support opens a connection to another
      relay, and the extend cell lists both IPv4 and IPv6 addresses, the
      first relay now picks randomly which address to use.  Closes
      ticket 33220.
When choosing an orport from an extendinfo, pick randomly. (This is not fully general yet: we only pick randomly among _supported_ addresses, and each extendinfo contains at most one IPv4 address and at most one IPv6 address, no matter what the extend cell had.) This change will help dual-stack relays do IPv6 reachability tests, in theory, by having them sometimes do IPv4 connections and sometimes do ipv6 connections. Closes ticket 33220. 2020-07-17 15:06:35 +02:00			`o Major features (relay, IPv6):`
			`- When a relay with IPv6 support opens a connection to another`
			`relay, and the extend cell lists both IPv4 and IPv6 addresses, the`
			`first relay now picks randomly which address to use. Closes`
			`ticket 33220.`