

When they do that, you'll be unable to do port forwarding yourself. What is more, ISPs have been speaking of putting an additional layer of NAT in the network. Because of NAT, we're losing our time developing hacks such as port forwarding, uPNP, and various other NAT traversal techniques. While NAT is fine for client-server access, such as the web, it complicates peer-to-peer applications quite a bit. People have managed to get IPv4 to scale by using a trick known as NAT, which consists in hiding multiple nodes behind a single IP address. There are probably around one billion nodes on the Internet now. Developed in the late 70s, IPv4 was not designed to scale beyond a hundred million nodes or so. IPv4, the protocol currently in use on the Internet, has served us well for 30 years now. Please note that I am not a Transmission developer, just a contributor, and hence none of what I say is an official position of the Transmission team. It seems like the core actually starts up and starts transferring data, but the UI doesn't come up, because its waiting for IPv6 which isn't available.Some of you may have been hearing about this new-fangled IPv6 thing. No, in my case the web-ui gets stuck booting up. If your OS supports only IPv4, WebUI will listen on IPv4.

If your OS supports IPv4 and IPv6, WebUI will listen on both address families. However this is really difficult to find out as there diagnostics on it. If I give the the jail a local IPv6 address everything works as expected. It never states on the command line that it bound to an IP-address.

It is stated nowhere that it is needed by qbittorrent. FreeBSD jails (a light weight virtualization solution that everybody uses on FreeBSD for everything) however only support IPv6 if explicitly told to do so which most people do not activate if they don't know they need it. FreeBSD supports IPv6 so qbittorrent might assume it is available. Qt5-xml-5.6.2 Qt SAX and DOM implementations Qt5-core-5.6.2_1 Qt core non-graphical module Qt4-corelib-4.8.7_6 Qt core non-graphical module Qbittorrent-nox11-3.3.10 Bittorrent client using libtorrent-rasterbar, web UI version Libtorrent-rasterbar-1.1.1_2 C++ library implementing a BitTorrent client
