failed to start lsb bring up/down networking rhel 7

Latest response

Restarting network (via systemctl): Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[FAILED]

Responses

I have the same issue on a fresh RHEL 7 install

Same here: Failed to start LSB: Bring up/down networking.

What does "systemctl status network" shows up? Check if this helps https://access.redhat.com/solutions/2784681

I am seeing the same issue, but it only occurs when I add NM_CONTROLLED="no" to my ifcfg-bond1 file. If I remove it, it works fine.

That is expected behavior, since by default NetworkManager takes the lead in activating/controlling network interfaces in RHEL7.x systems. Is NetworkManager disabled over there? Is this RHEL7.x?

getting error in RHEL 7.4 : failed to start lsb bring up/down networking

Same here but checking other posts it's caused because NetworkManager starts before the interface is ready. I I've been reading it does not affect the network unit, however it messes my wireless connection don't know how or why

I just started getting this problem running as a VBox guest running 7.6. I can manually connect the interfaces, one NAT and one Vhost-only, but the network manager fails to start the interfaces. When I run systemctl status network, I get "RTNETLINK answers: File exists".

I believe this problem started when I incurred a catastrophic failure in the virtual host guest additions. All was running smoothly until I used the VBox menu to set the virtual display to move to an external monitor. That caused the guest to reboot and from then on, guest additions refuse to allow guest scaling, even after reinstalling guest additions in the RHEL guest, or the network manager to start the interfaces.

there is a similar solution at:

https://communities.vmware.com/thread/580135

I had this error due to setting my ethernet interfaces to DHCP when they should be Manual ( ie Static IPs)..

how can fix this problem .

I also got this error, but I ruled out the problem after I restarted NetworkManager.

I also got this error, but I ruled out the problem after I restarted NetworkManager.

I had this issue just a moment ago and it ended up being an mistake in my ifcfg-interface file. It was set to DHCP when I needed a static interface. Must've been a mis-click when I deployed the VM.

To fix my issue, I just corrected the line in /etc/sysconfig/ifcfg-interfacename from "BOOTPROTO=DHCP" to "BOOTPROTO=none", then bounced the NetworkManager and it resolved the error.

Glad that worked for you Tony Graves

Anyone experiencing this, please give the output of journalctl -xeu NetworkManager (just a portion that is relevant) or systemctl status -l NetworkManager important also nmcli dev status

Regards

RJ

I just downloaded and installed RHEL 7.5. Initially after installing, I was able to connect to the network (using Wifi, dual boot Windows 10). Since it was a fresh install, it only made sense to apply updates. I ran yum check-update and yum -y update and it installed a number of updates. Immediately after the updates, but before re-booting, I was still able to ping -c 4 8.8.8.8 and get results. After rebooting, I got 'connect: Network is unreachable' when I ran ping -c 4 8.8.8.8. I did notice that my /etc/sysconfig/network was empty. I tried adding:

NETWORK=yes
GATEWAY=xxx.xxx.xxx.xxx

but it still doesn't work after rebooting.

journalctl -xeu NetworkManager
-- No entries --

systemctl status network.service -l
network.service - LSB: Bring up/down networking
 Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)
 Active: failed (Result: exit-code) since Thu... 23min ago
 Docs: man:systemd-sysv-generator(0)
 Process: 1161 ExecStart=/etc/rc.d/init.dnetwork start (code=exited, status=1/FAILURE)
Jan 30 23:29:39 rhel75-server systemd[1]: starting LSB: Bring up/down networking... 
Jan 30 23:29:40 rhel75-server network[1161]: Bringing up loopback interface: [ OK ] 
Jan 30 23:29:40 rhel75-server network[1161]: Bringing up interface ATT7gdQKwa: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device  has different MAC address than expected, ignoring. 
Jan 30 23:29:40 rhel75-server network[1161]: [FAILED]
Jan 30 23:29:40 rhel75-server systemd[1]: network.service control process exited, code=exited status=1 
Jan 30 23:29:40 rhel75-server systemd[1]: Failed to start LSB: Bring up/down networking. 
Jan 30 23:29:40 rhel75-server systemd[1]: Unit network.service entered failed state. 
Jan 30 23:29:40 rhel75-server systemd[1]: network.service failed.

Not sure if this could be related, but I am getting an error at boot time:

[     0.904765] EFI: Loaded cert 'Lenovo UEFI CA 2014: 4b91aNotActualKey9c8f' linked to '.system_keyring'
[     0.904771] X.509: Cert for 'Trust - Lenovo Certificate' must have a SubjKeyId extension
[     0.904773] EFI: Problem loading in-kernel X.509 certificate (-129)

I repeated the steps above with no intervening steps.1 After I re-installed RHEL 7.5, I was able to connect to ping successfully. I rebooted and was still able to ping. Finally, I updated the system. I was able to ping until I re-booted. Then I was no longer able to ping. The logs from the last reboot are below.

$ journalctl -xeu NetworkManager
-- Logs begin at Sat 2020-02-01 02:26:25 EST, end at Sat 2020-02-01 07:29:05 EST. --
Feb 01 07:26:42 rhel75-server systemd[1]: Starting Network Manager...
-- Subject: Unit NetworkManager.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit NetworkManager.service has begun starting up.
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.7093] NetworkManager (version 1.18.0-5.el7_7.1) is starting... (for the first time)
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.7106] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 00-server.conf, 10-slaves-order.conf)
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.8193] bus-manager: acquired D-Bus service "org.freedesktop.NetworkManager"
Feb 01 07:26:43 rhel75-server systemd[1]: Started Network Manager.
-- Subject: Unit NetworkManager.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit NetworkManager.service has finished starting up.
-- 
-- The start-up result is done.
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9324] manager[0x55ce027fe0c0]: monitoring kernel firmware directory '/lib/firmware'.
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9683] hostname: hostname: using hostnamed
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9684] hostname: hostname changed from (none) to "rhel75-server"
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9691] dns-mgr[0x55ce027e6220]: init: dns=default,systemd-resolved rc-manager=file
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9711] manager[0x55ce027fe0c0]: rfkill: Wi-Fi hardware radio set enabled
Feb 01 07:26:43 rhel75-server NetworkManager[1171]: <info>  [1580560003.9711] manager[0x55ce027fe0c0]: rfkill: WWAN hardware radio set enabled
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.0204] settings: Loaded settings plugin: SettingsPluginIfcfg ("/usr/lib64/NetworkManager/1.18.0-5.el7_7.1/libnm-settings-plugin-ifcfg-rh.so")
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.0265] settings: Loaded settings plugin: NMSIbftPlugin ("/usr/lib64/NetworkManager/1.18.0-5.el7_7.1/libnm-settings-plugin-ibft.so")
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.0265] settings: Loaded settings plugin: NMSKeyfilePlugin (internal)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.0647] ifcfg-rh: new connection /etc/sysconfig/network-scripts/ifcfg-enp1s0 (f567ded5-e4d7-4177-b881-e508bcb98c6d,"enp1s0")
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.0667] ifcfg-rh: new connection /etc/sysconfig/network-scripts/ifcfg-ATT7gdQKwa (d91e9d21-5a5a-472a-8120-b339fa2bee37,"ATT7gdQKwa")
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.1854] manager: rfkill: Wi-Fi enabled by radio killswitch; enabled by state file
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.1857] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.1859] manager: Networking is enabled by state file
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.1898] dhcp-init: Using DHCP client 'dhclient'
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.3574] Loaded device plugin: NMAtmManager (/usr/lib64/NetworkManager/1.18.0-5.el7_7.1/libnm-device-plugin-adsl.so)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5442] Loaded device plugin: NMTeamFactory (/usr/lib64/NetworkManager/1.18.0-5.el7_7.1/libnm-device-plugin-team.so)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5918] Loaded device plugin: NMWifiFactory (/usr/lib64/NetworkManager/1.18.0-5.el7_7.1/libnm-device-plugin-wifi.so)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5937] device (lo): carrier: link connected
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5942] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5964] manager: (enp1s0): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2)
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.5990] device (enp1s0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Feb 01 07:26:44 rhel75-server NetworkManager[1171]: <info>  [1580560004.9170] device (enp1s0): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed')
Feb 01 07:26:50 rhel75-server NetworkManager[1171]: <info>  [1580560010.8061] manager: startup complete
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.1335] manager: (virbr0): new Bridge device (/org/freedesktop/NetworkManager/Devices/3)
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.1592] manager: (virbr0-nic): new Tun device (/org/freedesktop/NetworkManager/Devices/4)
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.1649] device (virbr0-nic): state change: unmanaged -> unavailable (reason 'connection-assumed', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.1673] device (virbr0-nic): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.3464] device (virbr0): state change: unmanaged -> unavailable (reason 'connection-assumed', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.3523] ifcfg-rh: add connection in-memory (018e0d74-ac1f-4e73-887b-4cc2737bc158,"virbr0")
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.3537] device (virbr0): state change: unavailable -> disconnected (reason 'connection-assumed', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4892] device (virbr0): Activation: starting connection 'virbr0' (018e0d74-ac1f-4e73-887b-4cc2737bc158)
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4901] device (virbr0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4908] device (virbr0): state change: prepare -> config (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4949] keyfile: add connection /var/run/NetworkManager/system-connections/virbr0-nic.nmconnection (c364a4e9-e211-4da3-88ca-3c4824deac6a,"virbr0-nic")
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4968] device (virbr0-nic): Activation: starting connection 'virbr0-nic' (c364a4e9-e211-4da3-88ca-3c4824deac6a)
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4970] device (virbr0): state change: config -> ip-config (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4974] device (virbr0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.4987] device (virbr0-nic): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5021] device (virbr0-nic): state change: prepare -> config (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5027] device (virbr0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5033] device (virbr0-nic): state change: config -> ip-config (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5038] device (virbr0): bridge port virbr0-nic was attached
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5038] device (virbr0-nic): Activation: connection 'virbr0-nic' enslaved, continuing activation
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5046] device (virbr0-nic): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5056] device (virbr0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5064] manager: NetworkManager state is now CONNECTED_LOCAL
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6111] device (virbr0): Activation: successful, device activated.
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6141] device (virbr0-nic): state change: ip-check -> unmanaged (reason 'connection-assumed', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6158] device (virbr0): bridge port virbr0-nic was detached
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6158] device (virbr0-nic): released from master device virbr0
Feb 01 07:27:34 rhel75-server NetworkManager[1171]: <info>  [1580560054.0217] agent-manager: req[0x55ce0286fca0, :1.65/org.gnome.Shell.NetworkAgent/1000]: agent registered

● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2020-02-01 07:26:43 EST; 2min 48s ago
     Docs: man:NetworkManager(8)
 Main PID: 1171 (NetworkManager)
    Tasks: 3
   CGroup: /system.slice/NetworkManager.service
           └─1171 /usr/sbin/NetworkManager --no-daemon

$ systemctl status -l NetworkManager
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5038] device (virbr0): bridge port virbr0-nic was attached
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5038] device (virbr0-nic): Activation: connection 'virbr0-nic' enslaved, continuing activation
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5046] device (virbr0-nic): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5056] device (virbr0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.5064] manager: NetworkManager state is now CONNECTED_LOCAL
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6111] device (virbr0): Activation: successful, device activated.
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6141] device (virbr0-nic): state change: ip-check -> unmanaged (reason 'connection-assumed', sys-iface-state: 'external')
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6158] device (virbr0): bridge port virbr0-nic was detached
Feb 01 07:26:52 rhel75-server NetworkManager[1171]: <info>  [1580560012.6158] device (virbr0-nic): released from master device virbr0
Feb 01 07:27:34 rhel75-server NetworkManager[1171]: <info>  [1580560054.0217] agent-manager: req[0x55ce0286fca0, :1.65/org.gnome.Shell.NetworkAgent/1000]: agent registered

  1. The first time around, before I ran into this thread, I had tried a number of fixes, including disabling NetworkManager, so I don't know how useful the previous logs are. 

Hi William,

Please try the following. First, temporarily disable the firewall, then retry your ping.

Run this as root:

systemctl stop firewalld
systemctl is-enabled firewalld

Then re-try your ping

Also, please give the output of this command:

nmcli dev status

That last command is intended to give the status of your network device.

I recommend you also use RHEL 7.7 instead of 7.5.

You say your system is dual boot. Will the network work with the other operating system? If it does, then I'm curious if the rpm for your network device is not proper. Let us know the output from this posts' commands.

Regards,
RJ

Thank you. Not to bore you with a long, drawn out description of hours of frustrating "learning opportunities", your comments about the network device and the fact that it does work for Windows, convinced me we were dealing with a driver issue. I rebooted into Windows and determined I had a Qualcomm Atheros QCA9377 Wireless Network Adapter. I had Windows check for driver updates, but all was current.

I eventually found this thread which solved my issues. It boils down to conflicting files and simply removing two of them.

I don't know, but I hope this will help solve some of the issues in this thread. -- Happy Camper again

BTW: I upgraded to 7.7. Thanks, again.

i am facing the same error while restarting the network service after changes, i am installing qradar on rhel 7.5. need help how can solve this issue.