Why can't Fedora start my (hard wired) network?

Question

I have a hard-wired Ethernet card/cable to my hub. I start Fedora 23 but there's no network, why? So I've checked that the card exists:-

[root@localhost ~]# lspci | grep Ether
00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8100/8101L/8139 PCI Fast Ethernet Adapter (rev 10)
[root@localhost ~]# lspci -vm -s 00:0b.0
Device: 00:0b.0
Class:  Ethernet controller
Vendor: Realtek Semiconductor Co., Ltd.
Device: RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
SVendor:    Packard Bell B.V.
SDevice:    Device e012
Rev:    10

Then I try to start the network (fyi systemctl restart network.service has the same output)...

[root@localhost ~]# service network start
Starting 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]

The result of the suggested command (systemctl status network.service above) is...

[root@localhost ~]# systemctl status network.service
● network.service - LSB: Bring up/down networking
   Loaded: loaded (/etc/rc.d/init.d/network)
   Active: failed (Result: exit-code) since Sun 2015-11-08 19:40:26 GMT; 30s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3072 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

Nov 08 19:40:23 localhost.localdomain network[3072]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 08 19:40:24 localhost.localdomain network[3072]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 08 19:40:25 localhost.localdomain network[3072]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 08 19:40:25 localhost.localdomain network[3072]: [  OK  ]
Nov 08 19:40:26 localhost.localdomain network[3072]: Bringing up interface enp0s11:  Error: Connection activation failed: No suitable device found for this connection.
Nov 08 19:40:26 localhost.localdomain network[3072]: [FAILED]
Nov 08 19:40:26 localhost.localdomain systemd[1]: network.service: Control process exited, code=exited status=1
Nov 08 19:40:26 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking.
Nov 08 19:40:26 localhost.localdomain systemd[1]: network.service: Unit entered failed state.
Nov 08 19:40:26 localhost.localdomain systemd[1]: network.service: Failed with result 'exit-code'.

Then I came across some suggestions on here that I check the contents of network-scipts and ifcfg-enp0s11, the one that failed above seems to be the one I'm looking for, the MAC address is the same as the one listed in ifconfig -a for that named device

[root@localhost ~]# more /etc/sysconfig/network-scripts/ifcfg-enp0s11 
HWADDR=00:13:D4:86:EB:18
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=enp0s11
UUID=b7fce5e7-b3aa-4e95-a014-8661889e9cce
ONBOOT=yes

My other options in network-scripts were

ifcfg-enp0s11  ifdown-ippp  ifdown-routes    ifup          ifup-ipv6   ifup-ppp       ifup-tunnel
ifcfg-lo       ifdown-ipv6  ifdown-sit       ifup-aliases  ifup-isdn   ifup-routes    ifup-wireless
ifdown         ifdown-isdn  ifdown-Team      ifup-bnep     ifup-plip   ifup-sit       init.ipv6-global
ifdown-bnep    ifdown-post  ifdown-TeamPort  ifup-eth      ifup-plusb  ifup-Team      network-functions
ifdown-eth     ifdown-ppp   ifdown-tunnel    ifup-ippp     ifup-post   ifup-TeamPort  network-functions-ipv6

But ifup eth, ifup eth1, ifup eth2, ifup enp0s11 and ifup lo all say there's no config found?!

[root@localhost ~]# ifup eth
/usr/sbin/ifup: configuration for eth not found.
Usage: ifup <device name>

I partially understand that the ifup commands are not really used anymore because of NetworkManager, which is running...

[root@localhost ~]# systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Sun 2015-11-08 19:35:13 GMT; 33min ago
 Main PID: 905 (NetworkManager)
   CGroup: /system.slice/NetworkManager.service
           └─905 /usr/sbin/NetworkManager --no-daemon

Nov 08 19:35:30 localhost.localdomain NetworkManager[905]: <info>  (virbr0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Nov 08 19:35:30 localhost.localdomain NetworkManager[905]: <info>  (virbr0): Activation: successful, device activated.
Nov 08 19:35:35 localhost.localdomain NetworkManager[905]: <info>  (virbr0-nic): link disconnected (calling deferred action)
Nov 08 19:36:57 localhost.localdomain NetworkManager[905]: <info>  use BlueZ version 5
Nov 08 19:40:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'
Nov 08 19:45:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'
Nov 08 19:50:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'
Nov 08 19:55:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'
Nov 08 20:00:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'
Nov 08 20:05:31 localhost.localdomain NetworkManager[905]: <info>  connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Error resolving 'fedoraproject.org': Name or service not known'

Any ideas why I have no network?

Solution

try this;

sudo vi /etc/sysconfig/network-scripts/ifcfg-enp0s11

then change the following;

BOOTPROTO="static"

Unless you have some particular reason to have a dynamically set IP I would set up a static IP address. This way all the other devices on your network always have the same IP to connect to ie ssh, http, ftp, etc.

IPADDR=the ip address in your router settings will be your external IP address GATEWAY= look in your router settings NETMASK= look in your router settings DNS1= look in your router settings DNS2= look in your router settings You can get to your router by typing its ip address in a browser url 192.168.1.1 or whatever your router ip is On my linksys router I go to the Status tab and all my info is under Router add all this info to your ifcfg-enp0s11 file and restart the network

sudo systemctl restart network.service

make sure it is enabled so you keep your setup on reboot

sudo systemctl enable network.service

and you can check the network status with

sudo systemctl status network.service

Comments

[Ross Drew]

is there at least anything else I can check?

[David H]

You need to first of all figure out why your loopback apparently is not working.

[Sam]

Did you manage to solve the problem?

[Ross Drew]

I never did. I gave up

[munish]

bugs.centos.org/view.php?id=7351