On Tue, 2019-10-08 at 16:14 +0000, Jorge Perez Higuera via networkmanager-list wrote: > So that is not working here. The machine gets the Ipv4 address > quickly and the dhclient ipv6 process starts getting an ip. 30 > seconds later the NetworkManager-wait-online service waits until it > fails. > If I create an ipv6 reservation in the dhcp server the machine boots > good with bot ipv4 and ipv6 addresses
That sounds not correct. I would enable level=TRACE logging. See [1] for hints about logging and rate-limiting of journal. [1] https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/contrib/fedora/rpm/NetworkManager.conf#n28 Then look at the log for a message like <info> [1570445723.4941] manager: startup complete NetworkManager-wait-online basically waits for this point. There are also logging messages earlier, telling you why "startup complete" is not yet reached, and why NM waits longer... A common reason is that you have a bridge/bond/team master that autoactivates without slaves. Such a device has no carrier and cannot fully activate, delaying "startup complete" indefinitely. best, Thomas > > The network setup is correct in this environment: > NAME="whatever" > TYPE=Ethernet > DEVICE=<interface> > ONBOOT=yes > BOOTPROTO=dhcp > IPV6INIT=yes > IPV6_AUTOCONF=no > IPV6_FAILURE_FATAL=no (inverse "may fail" meaning) > DHCPV6C=yes > DHCPV6_DUID=ll > > > -----Mensaje original----- > De: Thomas Haller [mailto:[email protected]] > Enviado el: martes, 8 de octubre de 2019 18:05 > Para: Jorge Perez Higuera; [email protected] > Asunto: Re: Need to send the dhclient6 to background in Centos 8 > > On Tue, 2019-10-08 at 15:10 +0000, Jorge Perez Higuera via > networkmanager-list wrote: > > If the dhcp server does not send an ipv6 lease IP, dhclient ipv6 > > process tries to get that ip during 30 seconds. That causes (i can > > see > > that via systemd-analyze blame) the startup of the > > NetworkManager-wait-online service is delayed, delaying the > > network-online.target I have services depending of this target and > > that delay causes some troubles to me. > > Hi, > > > DHCPv6 is only done if either > > - "ipv6.method=dhcp" is configured in the profile > > - "ipv6.method=auto" is configured in the profile, and the IPv6 > router in your network sets the managed flag in its router > advertisements, to indicate to use DHCPv6. > > > It seems better to fix your configuration and/or networking setup. > > Also, if you configure ipv6.may-fail=yes and the device gets a IPv4 > address, then the entire device is considered active (and no longer > blocks NetworkManager-wait-online). So, if you care about IPv6, you > maybe want to set ipv6.may-fail=no. > > > best, > Thomas > > > > -----Mensaje original----- > > De: Thomas Haller [mailto:[email protected]] Enviado el: martes, 8 > > de > > octubre de 2019 14:00 > > Para: Jorge Perez Higuera; [email protected] > > Asunto: Re: Need to send the dhclient6 to background in Centos 8 > > > > On Tue, 2019-10-08 at 11:37 +0000, Jorge Perez Higuera via > > networkmanager-list wrote: > > > Hi all. I need some help > > > > > > I need to send the dhclient ipv6 process to background (I use > > > dhcp=dhclient) > > > I know it can be done passing the –nw parameter via dhclient but > > > i > > > don’t know how to pass this to dhclient via NetworkManager Also > > > in > > > Centos 8 it start in foreground (-d parameter) > > > > > > Is there any way to do this? > > > Is is posible via internal client? > > > > > > NetworkManager 1.14.0 > > > Centos 8 > > > > > > Thank you > > > > Hi, > > > > when NetworkManager uses dhclient as its DHCP plugin, then the > > process > > is controlled by NetworkManager. In that case, NetworkManager will > > always spawn the process in the background. That is regardless > > whether > > NetworkManager itself is in the background or not). Anyway, the > > way > > NetworkManager spawns this process is of little concern to the > > user. > > > > In fact, when using NetworkManager you usually would be not > > concerned > > with dhclient at all. The process is for the most part an > > implementation detail of how NetworkManager does DHCP. > > > > Which problem are you trying to solve? > > > > best, > > Thomas > > _______________________________________________ > > networkmanager-list mailing list > > [email protected] > > https://mail.gnome.org/mailman/listinfo/networkmanager-list > _______________________________________________ > networkmanager-list mailing list > [email protected] > https://mail.gnome.org/mailman/listinfo/networkmanager-list
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