Comment 10 for bug 761558

Dual-stack and single-stack connections are being tested extensively, but at this point the default is already (for an automatically created connection, that is) to have IPv6 at Automatic and optional. This doesn't apply to connections created by clicking the Add button in nm-connection-editor though; see http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=36db194ae95e35cc7b8f431ab984780dea24656d and http://git.gnome.org/browse/network-manager-applet/commit/?id=7068b0f7052078f101ad1eccc3456492f03fbb8b. Those will get in with the next upload of NM and nm-applet (anytime now).

Syslog looks correct except for the crash you got, and since you confirmed that with the correct settings for the interface the connection comes up properly, I'm not overly concerned by any of this (though the crash still needs fixing).

One thing to keep in mind is that ipv4 will remain *required*, at least for 11.10; and most probably until after the next LTS (because let's face it, IPv6 isn't set up everywhere, and things need to work magically for users who don't have ipv6... and also should fail magically when users don't actually get any dhcp responses). I'll however be happy to be convinced that the automatic failing of v4 interfaces that don't complete DHCP is no necessary. (Though I believe it makes everyone's life easier).