With the alpha version 0.2.3.9 of Tor, the anonymity software, Tor clients can now connect to private bridges using IPv6. According to the announcement on the Tor blog, when using IPv6, bridges still need at least one IPv4 address, as they would otherwise lose contact with other nodes in the Tor network. On the Tor Developer mailing list, Linus Nordberg describes how to set the necessary options on a Tor bridge for IPv6 operation.

In addition, the Tor developers have created the "DisableNetwork" configuration option and a "tor2web" mode which enables clients to connect to hidden services without anonymity and is likely to improve connection performance; however, to avoid possible mistakes, the latter feature can only be turned on at compile time. With "DisableNetwork" turned on, Tor is prevented from launching or accepting any connections other than on a control port. This feature can also be used by software such as Orbot (the Tor implementation for Android) as a means of saving power. Further details about the new features can be found on the Tor blog and the Developer Forum. Source code for Tor is available to download under the terms of the BSD licence.

See also:

Native C port of Tor for Android, a report from The H.

(ehe)