add info for IPv6-only hosts to torrc man page
Add a sentence to the ClientUseIPv6 section of the tor man page:
For IPv6 only hosts, you need to also set ClientUseIPv4 to 0 to disable IPv4.
Add a sentence to the ClientUseIPv6 section of the tor man page:
For IPv6 only hosts, you need to also set ClientUseIPv4 to 0 to disable IPv4.