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NetworkManager fails with “Could not find source connection”

Trouble connecting to VPN using network-manager, while command line worksHow can I be notified about state changes to a VPN adapterBacktrack 5 R3 - Refuses to connect to VPNFeed all traffic through OpenVPN for a specific network namespace onlyRun daemon on startup in Debian once openvpn connection establishedpfsense tcp connection between openvpn and lan is brokenInternet connection problem with web browsers onlyWhy does NetworkManager explicitly support tun/tap devices?Browser issues with VPNTwo IP addresses assigned to the same network card - OpenVPN issues?Cannot connect to WiFi with nmcli, although secrets are provided

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4

1

When trying to connect to a VPN using openvpn through NetworkManager, it fails with

Apr 17 02:03:17 GAMINGSTATION NetworkManager[1922]: <info> 
[1523923397.5294] audit: op="connection-activate" 
uuid="186c555a-dd51-4dc1-97c9-70d93c30713d" name="kit" 
pid=1976 uid=1000 result="fail" reason="Could not find source connection."

However, when using openvpn directly, the connection works.

I found multiple threads suggesting that NetworkManager needs to manage the default network device, but that is the case:

$ nmcli device status
DEVICE TYPE STATE CONNECTION 
br0 bridge connected br0 
enp3s0 ethernet connected enp3s0 
lo loopback not managed -- 

What could be the issue here?

Note: This question looks very similar to Trouble connecting to VPN using network-manager, while command line works, however that question does not have any useful answers.

arch-linux openvpn networkmanager vpn

share|improve this question

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  +1 for the nmcli device status command. turned out an unmanaged default interface was the issue in my case.
  
  – myrdd
  Oct 1 '18 at 19:39
  

  
  
  
  

add a comment | 

4

1

When trying to connect to a VPN using openvpn through NetworkManager, it fails with

Apr 17 02:03:17 GAMINGSTATION NetworkManager[1922]: <info> 
[1523923397.5294] audit: op="connection-activate" 
uuid="186c555a-dd51-4dc1-97c9-70d93c30713d" name="kit" 
pid=1976 uid=1000 result="fail" reason="Could not find source connection."

However, when using openvpn directly, the connection works.

I found multiple threads suggesting that NetworkManager needs to manage the default network device, but that is the case:

$ nmcli device status
DEVICE TYPE STATE CONNECTION 
br0 bridge connected br0 
enp3s0 ethernet connected enp3s0 
lo loopback not managed -- 

What could be the issue here?

Note: This question looks very similar to Trouble connecting to VPN using network-manager, while command line works, however that question does not have any useful answers.

arch-linux openvpn networkmanager vpn

share|improve this question

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  +1 for the nmcli device status command. turned out an unmanaged default interface was the issue in my case.
  
  – myrdd
  Oct 1 '18 at 19:39
  

  
  
  
  

add a comment | 

When trying to connect to a VPN using openvpn through NetworkManager, it fails with

Apr 17 02:03:17 GAMINGSTATION NetworkManager[1922]: <info> 
[1523923397.5294] audit: op="connection-activate" 
uuid="186c555a-dd51-4dc1-97c9-70d93c30713d" name="kit" 
pid=1976 uid=1000 result="fail" reason="Could not find source connection."

However, when using openvpn directly, the connection works.

I found multiple threads suggesting that NetworkManager needs to manage the default network device, but that is the case:

$ nmcli device status
DEVICE TYPE STATE CONNECTION 
br0 bridge connected br0 
enp3s0 ethernet connected enp3s0 
lo loopback not managed -- 

What could be the issue here?

Note: This question looks very similar to Trouble connecting to VPN using network-manager, while command line works, however that question does not have any useful answers.

arch-linux openvpn networkmanager vpn

share|improve this question

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

Apr 17 02:03:17 GAMINGSTATION NetworkManager[1922]: <info> 
[1523923397.5294] audit: op="connection-activate" 
uuid="186c555a-dd51-4dc1-97c9-70d93c30713d" name="kit" 
pid=1976 uid=1000 result="fail" reason="Could not find source connection."

$ nmcli device status
DEVICE TYPE STATE CONNECTION 
br0 bridge connected br0 
enp3s0 ethernet connected enp3s0 
lo loopback not managed -- 

share|improve this question

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

share|improve this question

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

edited Apr 17 '18 at 7:54

GAD3R

27.9k1958114

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

asked Apr 17 '18 at 0:11

F43nd1rF43nd1r

12115

2 Answers
2

active

oldest

votes

3

I got this bug even weirder.

$ nmcli c up VPN

Error: Connection activation failed: Could not find source connection.

$ nm-applet # click icon, VPN, VPN

WORKS!

I learned that Network manager first check if it "owns the default route" before it allows VPNs.

Any route will work: You can satisfy it with default route to 127.0.0.1. You can give it default ipv4 route when your vpn gateway is ipv6. It does not care about these little details :)

share|improve this answer

answered Jun 21 '18 at 12:20

nmhnmh

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I do the same with nmcli, then I try the nm-applet and neither work despite the fact that they worked before reboot.
  
  – jeremiah
  Oct 26 '18 at 21:54
  

  
  
  
  

add a comment | 

1

I had a long fight for this but this how I managed to find a workaround the issue in Ubuntu 18 using network-manager and GUI:

Download GUI packages

$ sudo apt-get install network-manager-openvpn network-manager-openvpn-gnome

Network manager change [ifupdown] managed=true

$ sudo nano /etc/NetworkManager/NetworkManager.conf
.
.
[ifupdown]
managed=true
.
.

Import config.ovpn from GUI

(Settings -> Network -> VPN -> +)

Check imported connection id from from the connection file that was created automatically. (The file should be named config and id should also be config but they can be something else)

$ sudo grep /etc/NetworkManager/system-connections/config | grep "^id"

Change rendered to NetworkManager and add the new connection id inside the ethernets

$ sudo nano /etc/netplan/01-netcfg.yaml

network:
 version: 2
 rendered: NetworkManager
 ethernets:
 enp0s25:
 dhcp4: yes
 config:
 dhcp4: yes

Apply changes

$ sudo netplan apply

Restart network-manager

$ sudo service network-manager restart

Open the connection either from the GUI or using nmcli

$ nmcli connection up config

share|improve this answer

answered Jul 20 '18 at 12:46

user117001user117001

111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It's "renderer" not "rendered"
  
  – Jairo
  2 days ago
  

  
  
  
  

add a comment | 

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3

I got this bug even weirder.

$ nmcli c up VPN

Error: Connection activation failed: Could not find source connection.

$ nm-applet # click icon, VPN, VPN

WORKS!

I learned that Network manager first check if it "owns the default route" before it allows VPNs.

Any route will work: You can satisfy it with default route to 127.0.0.1. You can give it default ipv4 route when your vpn gateway is ipv6. It does not care about these little details :)

share|improve this answer

answered Jun 21 '18 at 12:20

nmhnmh

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I do the same with nmcli, then I try the nm-applet and neither work despite the fact that they worked before reboot.
  
  – jeremiah
  Oct 26 '18 at 21:54
  

  
  
  
  

add a comment | 

3

I got this bug even weirder.

$ nmcli c up VPN

Error: Connection activation failed: Could not find source connection.

$ nm-applet # click icon, VPN, VPN

WORKS!

I learned that Network manager first check if it "owns the default route" before it allows VPNs.

Any route will work: You can satisfy it with default route to 127.0.0.1. You can give it default ipv4 route when your vpn gateway is ipv6. It does not care about these little details :)

share|improve this answer

answered Jun 21 '18 at 12:20

nmhnmh

312

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I do the same with nmcli, then I try the nm-applet and neither work despite the fact that they worked before reboot.
  
  – jeremiah
  Oct 26 '18 at 21:54
  

  
  
  
  

add a comment | 

I got this bug even weirder.

$ nmcli c up VPN

Error: Connection activation failed: Could not find source connection.

$ nm-applet # click icon, VPN, VPN

WORKS!

I learned that Network manager first check if it "owns the default route" before it allows VPNs.

Any route will work: You can satisfy it with default route to 127.0.0.1. You can give it default ipv4 route when your vpn gateway is ipv6. It does not care about these little details :)

share|improve this answer

answered Jun 21 '18 at 12:20

nmhnmh

312

$ nmcli c up VPN

$ nm-applet # click icon, VPN, VPN

share|improve this answer

answered Jun 21 '18 at 12:20

nmhnmh

312

answered Jun 21 '18 at 12:20

nmhnmh

312

answered Jun 21 '18 at 12:20

nmhnmh

312

1

I had a long fight for this but this how I managed to find a workaround the issue in Ubuntu 18 using network-manager and GUI:

Download GUI packages

$ sudo apt-get install network-manager-openvpn network-manager-openvpn-gnome

Network manager change [ifupdown] managed=true

$ sudo nano /etc/NetworkManager/NetworkManager.conf
.
.
[ifupdown]
managed=true
.
.

Import config.ovpn from GUI

(Settings -> Network -> VPN -> +)

Check imported connection id from from the connection file that was created automatically. (The file should be named config and id should also be config but they can be something else)

$ sudo grep /etc/NetworkManager/system-connections/config | grep "^id"

Change rendered to NetworkManager and add the new connection id inside the ethernets

$ sudo nano /etc/netplan/01-netcfg.yaml

network:
 version: 2
 rendered: NetworkManager
 ethernets:
 enp0s25:
 dhcp4: yes
 config:
 dhcp4: yes

Apply changes

$ sudo netplan apply

Restart network-manager

$ sudo service network-manager restart

Open the connection either from the GUI or using nmcli

$ nmcli connection up config

share|improve this answer

answered Jul 20 '18 at 12:46

user117001user117001

111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It's "renderer" not "rendered"
  
  – Jairo
  2 days ago
  

  
  
  
  

add a comment | 

1

I had a long fight for this but this how I managed to find a workaround the issue in Ubuntu 18 using network-manager and GUI:

Download GUI packages

$ sudo apt-get install network-manager-openvpn network-manager-openvpn-gnome

Network manager change [ifupdown] managed=true

$ sudo nano /etc/NetworkManager/NetworkManager.conf
.
.
[ifupdown]
managed=true
.
.

Import config.ovpn from GUI

(Settings -> Network -> VPN -> +)

Check imported connection id from from the connection file that was created automatically. (The file should be named config and id should also be config but they can be something else)

$ sudo grep /etc/NetworkManager/system-connections/config | grep "^id"

Change rendered to NetworkManager and add the new connection id inside the ethernets

$ sudo nano /etc/netplan/01-netcfg.yaml

network:
 version: 2
 rendered: NetworkManager
 ethernets:
 enp0s25:
 dhcp4: yes
 config:
 dhcp4: yes

Apply changes

$ sudo netplan apply

Restart network-manager

$ sudo service network-manager restart

Open the connection either from the GUI or using nmcli

$ nmcli connection up config

share|improve this answer

answered Jul 20 '18 at 12:46

user117001user117001

111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It's "renderer" not "rendered"
  
  – Jairo
  2 days ago
  

  
  
  
  

add a comment | 

I had a long fight for this but this how I managed to find a workaround the issue in Ubuntu 18 using network-manager and GUI:

Download GUI packages

$ sudo apt-get install network-manager-openvpn network-manager-openvpn-gnome

Network manager change [ifupdown] managed=true

$ sudo nano /etc/NetworkManager/NetworkManager.conf
.
.
[ifupdown]
managed=true
.
.

Import config.ovpn from GUI

(Settings -> Network -> VPN -> +)

Check imported connection id from from the connection file that was created automatically. (The file should be named config and id should also be config but they can be something else)

$ sudo grep /etc/NetworkManager/system-connections/config | grep "^id"

Change rendered to NetworkManager and add the new connection id inside the ethernets

$ sudo nano /etc/netplan/01-netcfg.yaml

network:
 version: 2
 rendered: NetworkManager
 ethernets:
 enp0s25:
 dhcp4: yes
 config:
 dhcp4: yes

Apply changes

$ sudo netplan apply

Restart network-manager

$ sudo service network-manager restart

Open the connection either from the GUI or using nmcli

$ nmcli connection up config

share|improve this answer

answered Jul 20 '18 at 12:46

user117001user117001

111

$ sudo apt-get install network-manager-openvpn network-manager-openvpn-gnome

$ sudo nano /etc/NetworkManager/NetworkManager.conf
.
.
[ifupdown]
managed=true
.
.

(Settings -> Network -> VPN -> +)

$ sudo grep /etc/NetworkManager/system-connections/config | grep "^id"

$ sudo nano /etc/netplan/01-netcfg.yaml

network:
 version: 2
 rendered: NetworkManager
 ethernets:
 enp0s25:
 dhcp4: yes
 config:
 dhcp4: yes

$ sudo netplan apply

$ sudo service network-manager restart

$ nmcli connection up config

share|improve this answer

answered Jul 20 '18 at 12:46

user117001user117001

111

answered Jul 20 '18 at 12:46

user117001user117001

111

answered Jul 20 '18 at 12:46

user117001user117001

111