On 21.11.2016 16:39, teor wrote:
Relays require an IPv4 address, because every relay in the Tor network needs to be able to connect to every other relay. If some relays can't reach other relays, then clients won't be able to select paths at random.
When I wrote that "using IPv6 is not rocket science" I meant this as a general comment related to the "oh, I'll just stick with IPv4 and hope for the best" attitude that many ISPs and users still show. I am aware that in a Tor context, reaching a critical mass of IPv6 capable nodes in order to provide a large enough pool to ensure anonymity is not trivial.
I meant to say that if the Tor authors need more IPv6 participants, I am happy to help.
Tor is IPv6 capable, and has been for years.
My nodes appear to see precious little IPv6 based traffic, though.
Do you advertise an IPv6 ORPort on your relays and bridges?
Yes. Netstat shows that Tor binds to both IPv4 and IPv6 addresses.
Do you set IPv6Exit on your exits?
$ grep -i IPv6 torrc ClientUseIPv6 1 ClientPreferIPv6DirPort 1 ClientPreferIPv6ORPort 1 IPv6Exit 1
Not sure if there is anything else I can use to signal that I support and prefer IPv6 via Tor settings?
-Ralph