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Wireguard does not work after upgrade to 3227.2.0 #808

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zhanbalam opened this issue Jul 25, 2022 · 7 comments · Fixed by flatcar-archive/coreos-overlay#2061
Closed

Wireguard does not work after upgrade to 3227.2.0 #808

zhanbalam opened this issue Jul 25, 2022 · 7 comments · Fixed by flatcar-archive/coreos-overlay#2061
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area/network Issues related to network. kind/bug Something isn't working

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@zhanbalam
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Wireguard interface stopped getting ip address. Showing link status: link/none.

Minimal WG config to reproduce:

  1. Create file at /etc/wireguard/wg0.conf with the contents:
[Interface]
PrivateKey = GGBq7heupvx84YpvsffxbAJlLYGIwhl5YqJaBbif+UE=
ListenPort = 5555
Address = 10.0.0.1/32
  1. Run wg-quick wg0 up
  2. Run ip a

The output on flatcar v. 3227.2.0:

...
wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
    link/none
...

The output on flatcar v. 3139.2.3:

...
wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
    link/none
    inet 10.0.0.1/32 scope global wg0
       valid_lft forever preferred_lft forever
...
@tormath1
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Hi @zhanbalam,

Sorry about that - we're currently investigating on some issues related to systemd-networkd, yours might be linked.

Could you please provide the output of:

networkctl list
networkctl status wg0
journalctl --no-pager --boot -u systemd-networkd

@tormath1 tormath1 added kind/bug Something isn't working area/network Issues related to network. labels Jul 25, 2022
@sms-system
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$ networkctl list
IDX LINK       TYPE      OPERATIONAL SETUP
  1 lo         loopback  carrier     unmanaged
  2 enp7s0     ether     routable    configured
  3 vlan       vlan      routable    configured
  4 wg-private wireguard carrier     failed
  5 wg-default wireguard carrier     failed
 12 wg0        wireguard carrier     failed

6 links listed.

$ networkctl status wg0
● 12: wg0
                     Link File: /usr/lib/systemd/network/99-default.link
                  Network File: /usr/lib/systemd/network/zz-default.network
                          Type: wireguard
                         State: carrier (failed)
                  Online state: offline
                           MTU: 1420 (max: 2147483552)
                         QDisc: noqueue
  IPv6 Address Generation Mode: none
          Queue Length (Tx/Rx): 1/1
             Activation Policy: up
           Required For Online: yes

Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 12:03:11 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 12:03:11 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Gained carrier

$ journalctl --no-pager --boot -u systemd-networkd
Jul 21 16:46:24 localhost systemd[1]: Starting Network Configuration...
Jul 21 16:46:24 localhost systemd-networkd[1012]: lo: Link UP
Jul 21 16:46:24 localhost systemd-networkd[1012]: lo: Gained carrier
Jul 21 16:46:24 localhost systemd-networkd[1012]: Enumeration completed
Jul 21 16:46:24 localhost systemd[1]: Started Network Configuration.
Jul 21 16:46:25 localhost systemd-networkd[1012]: vlan: netdev ready
Jul 21 16:46:25 localhost systemd-networkd[1012]: enp7s0: Link UP
Jul 21 16:46:25 localhost systemd-networkd[1012]: vlan: Link UP
Jul 21 16:46:27 localhost systemd-networkd[1012]: enp7s0: Gained carrier
Jul 21 16:46:27 localhost systemd-networkd[1012]: vlan: Gained carrier
Jul 21 16:46:29 localhost systemd-networkd[1012]: vlan: Gained IPv6LL
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-default: Link UP
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-default: Gained carrier
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-private: Link UP
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-private: Gained carrier
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-private: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-private: Failed to configure DHCPv4 client: Invalid argument
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-private: Failed
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-default: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-default: Failed to configure DHCPv4 client: Invalid argument
Jul 21 16:46:29 localhost systemd-networkd[1012]: wg-default: Failed
Jul 21 16:46:29 localhost systemd-networkd[1012]: enp7s0: Gained IPv6LL
Jul 21 16:46:31 localhost systemd-networkd[1012]: enp7s0: DHCPv4 address 65.108.127.202/26, gateway 65.108.127.193 acquired from 95.217.255.68
Jul 25 09:00:37 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 09:00:37 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 09:00:37 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 09:00:37 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 09:00:37 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 09:08:47 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 09:08:47 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Reconfiguring with /usr/lib/systemd/network/zz-default.network.
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 09:08:56 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 09:12:05 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 09:12:05 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Reconfiguring with /usr/lib/systemd/network/zz-default.network.
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 09:12:09 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 09:20:12 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 09:20:12 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 09:20:15 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 09:20:15 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 09:20:15 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 09:20:15 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 09:20:15 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 09:22:36 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 09:22:36 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 09:22:56 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 09:22:56 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 09:22:56 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 09:22:56 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 09:22:56 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 10:54:04 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 10:54:04 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 10:54:06 localhost systemd-networkd[1012]: wg0: Gained carrier
Jul 25 12:03:11 localhost systemd-networkd[1012]: wg0: Link DOWN
Jul 25 12:03:11 localhost systemd-networkd[1012]: wg0: Lost carrier
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Failed to configure DHCPv4 client: Invalid argument
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Failed
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Link UP
Jul 25 12:03:12 localhost systemd-networkd[1012]: wg0: Gained carrier

@tormath1
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tormath1 commented Jul 25, 2022 •
edited
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Thanks @sms-system for providing the logs. If you have the hand on the instance, could you try to set the KeepConfiguration=yes parameter?

Or directly use this Ignition configuration:

{
  "ignition": {
    "version": "3.3.0"
  },
  "storage": {
    "files": [
      {
        "path": "/etc/systemd/networkd/zz-default.network.d/keep.conf",
        "contents": {
          "source": "data:,%5BNetwork%5D%0AKeepConfiguration%3Dyes%0A"
        }
      }
    ]
  }
}

@miao0miao miao0miao mentioned this issue Jul 26, 2022
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@sms-system
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@tormath1 Nope, it doesn't work

$ cat /etc/systemd/networkd/zz-default.network.d/keep.conf
[Network]
KeepConfiguration=yes

$ sudo reboot

$ journalctl --no-pager --boot -u systemd-networkd
Jul 27 10:54:54 localhost systemd[1]: Starting Network Configuration...
Jul 27 10:54:54 localhost systemd-networkd[992]: lo: Link UP
Jul 27 10:54:54 localhost systemd-networkd[992]: lo: Gained carrier
Jul 27 10:54:54 localhost systemd-networkd[992]: Enumeration completed
Jul 27 10:54:54 localhost systemd[1]: Started Network Configuration.
Jul 27 10:54:55 localhost systemd-networkd[992]: vlan: netdev ready
Jul 27 10:54:55 localhost systemd-networkd[992]: enp7s0: Link UP
Jul 27 10:54:55 localhost systemd-networkd[992]: vlan: Link UP
Jul 27 10:54:57 localhost systemd-networkd[992]: enp7s0: Gained carrier
Jul 27 10:54:58 localhost systemd-networkd[992]: vlan: Gained carrier
Jul 27 10:54:59 localhost systemd-networkd[992]: enp7s0: Gained IPv6LL
Jul 27 10:54:59 localhost systemd-networkd[992]: vlan: Gained IPv6LL
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-default: Link UP
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-default: Gained carrier
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Failed to configure DHCPv4 client: Invalid argument
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Failed
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-default: Bumping MTU bytes from 1420 to 1500 because of stacked device. If it is not desired, then please explicitly specify MTUBytes= setting.
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-default: Failed to configure DHCPv4 client: Invalid argument
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-default: Failed
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Link UP
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Gained carrier
Jul 27 10:55:01 localhost systemd-networkd[992]: enp7s0: DHCPv4 address 65.108.127.201/26, gateway 65.108.127.193 acquired from 95.217.255.68

$ networkctl status wg-private
● 4: wg-private
                     Link File: /usr/lib/systemd/network/99-default.link
                  Network File: /usr/lib/systemd/network/zz-default.network
                          Type: wireguard
                         State: carrier (failed)
                  Online state: offline
                           MTU: 1420 (max: 2147483552)
                         QDisc: noqueue
  IPv6 Address Generation Mode: none
          Queue Length (Tx/Rx): 1/1
             Activation Policy: up
           Required For Online: yes

Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Bumping MTU bytes from 1420 to 1500 because of stacked device.>
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Failed to configure DHCPv4 client: Invalid argument
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Failed
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Link UP
Jul 27 10:54:59 localhost systemd-networkd[992]: wg-private: Gained carrier

@jepio
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jepio commented Jul 27, 2022

Sorry, the correct path should be: /etc/systemd/network/zz-default.network.d/keep.conf

@sms-system
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Oh, yes. Wireguard works with this drop-in now

@tormath1
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according to the documentation1:

The setting "dhcp" implies "dhcp-on-stop", and "yes" implies "dhcp" and "static".

I think we could default to KeepConfiguration=yes in place of this: https://github.com/flatcar-linux/init/blob/b99ff0626f5983af7aee47e95f34991d42f68e5b/systemd/network/zz-default.network#L3

Footnotes

  1. https://www.freedesktop.org/software/systemd/man/systemd.network.html ↩

@tormath1 tormath1 mentioned this issue Jul 27, 2022
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@tormath1 tormath1 mentioned this issue Aug 29, 2022
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coreos-base/init: keep static network configuration flatcar-archive/coreos-overlay
4 participants
@sms-system @zhanbalam @jepio @tormath1