Re: NM VPN does not allow IPv6-only connections?

[Joel Goguen <contact+nmlist jgoguen ca>]

On Sun, 2019-02-10 at 08:07 -0600, Greg Oliver via networkmanager-list wrote:
> On Thu, Feb 7, 2019 at 12:40 PM Joel Goguen via networkmanager-list <
> networkmanager-list gnome org> wrote:
>
> > When connecting to a VPN using NetworkManager (specifically tried using
> > OpenConnect but the bug looks to be in the NetworkManager core code) with
> > IPv4
> > disabled, connecting fails. NetworkManager attempts to get an IPv4
> > configuration
> > anyway and fails if it isn't present.
> >
> > On one VPN, with IPv4 disabled and no IPv4 DHCP in use, connecting failed
> > because no IPv4 config could be found. With the same VPN profile, IPv4
> > disabled,
> > but IPv4 addresses being handed out via DHCP, NetworkManager still looks
> > for a
> > connection and configures IPv4 even though it's disabled.
> >
> > On a VPN with no IPv4 available, IPv4 disabled in NM:
> >
> > Oct 12 15:01:07 jgoguen-fedora NetworkManager[1417]: <info>
> > [1539381667.4587]
> > vpn-connection[0x560695b500f0,05093305-9aac-4765-8a24-65304bb12667,"VPN",0]:
> > VPN
> > connection: (IP Config Get) reply received.
> > Oct 12 15:01:07 jgoguen-fedora NetworkManager[1417]: <info>
> > [1539381667.4601]
> > vpn-connection[0x560695b500f0,05093305-9aac-4765-8a24-
> > 65304bb12667,"VPN",8:(vpn0)]: VPN connection: (IP4 Config Get) reply
> > received
> > Oct 12 15:01:07 jgoguen-fedora NetworkManager[1417]: <warn>
> > [1539381667.4604]
> > vpn-connection[0x560695b500f0,05093305-9aac-4765-8a24-
> > 65304bb12667,"VPN",8:(vpn0)]: invalid IP4 config received!
> > Oct 12 15:01:07 jgoguen-fedora NetworkManager[1417]: <warn>
> > [1539381667.4606]
> > vpn-connection[0x560695b500f0,05093305-9aac-4765-8a24-
> > 65304bb12667,"VPN",8:(vpn0)]: VPN connection: did not receive valid IP
> > config
> > information
> >
> > On a VPN with IPv4 available, IPv4 disabled in NM, the connection succeeds
> > and
> > an IPv4 address is assigned.
> >
> > With a wireless network, disabling IPv4 works as expected.
> >
> > Reported as
> > https://gitlab.freedesktop.org/NetworkManager/NetworkManager/issues/62
> > but that
> > hasn't seen any activity in 3 months…
> >
> > --
> > Joel Goguen
>
> You do see how far your time is off right...?
The time was precisely correct when these logs were gathered. And it's still a
valid bug today, if you'd really like newer logs.