Am 24.05.2015 um 19:25 schrieb tor-server-creator@use.startmail.com:

shouldnt there be a "a" in the first line? how important ist the letter a? i guess some operators just added the lines without "a" like above. additional: how many ipv6 relays are up NOW? and are there plans to include a button into torbrowser to enable/disable ipv6?

Not sure where the a should be put, so maybe someone can just past a sample config with the IPv6 enabled, I think from that we can substitute easily.

One question also, is this for relay servers or ONLY for exit enabled servers?

yl