Wired ethernet either not detected or unmanaged

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This is a really weird situation - I think for some reason the ethernet connection name changed from eth0 to eno1 when I updated ubuntu. I added those changes to the etc/nework file and changed managed=true in NetworkManager.conf file, but even when the network is identiified and even seems to have an IP, there is not connection. Here's the output:



ifconfig -a

eno1 Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:20 Memory:f7200000-f7220000

eno1:avahi Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
inet addr:169.254.8.4 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:f7200000-f7220000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:3304 errors:0 dropped:0 overruns:0 frame:0
TX packets:3304 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:261552 (261.5 KB) TX bytes:261552 (261.5 KB)

wlp2s0 Link encap:Ethernet HWaddr 48:e2:44:a9:9b:f5
inet addr:147.252.138.6 Bcast:147.252.143.255 Mask:255.255.248.0
inet6 addr: fe80::18e8:aa01:40ec:701/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57219 errors:0 dropped:0 overruns:0 frame:0
TX packets:17844 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36931306 (36.9 MB) TX bytes:2883308 (2.8 MB)

lspci -knn | grep Eth -A3

00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
DeviceName: Onboard LAN
Subsystem: Dell Ethernet Connection (3) I218-LM [1028:062b]
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)


NetworkManager.conf:



[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true


etc/interfaces:



# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eno1
iface eno1 inet dhcp









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  • Is the connection working?
    – prab4th
    Mar 12 at 12:26














up vote
1
down vote

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This is a really weird situation - I think for some reason the ethernet connection name changed from eth0 to eno1 when I updated ubuntu. I added those changes to the etc/nework file and changed managed=true in NetworkManager.conf file, but even when the network is identiified and even seems to have an IP, there is not connection. Here's the output:



ifconfig -a

eno1 Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:20 Memory:f7200000-f7220000

eno1:avahi Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
inet addr:169.254.8.4 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:f7200000-f7220000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:3304 errors:0 dropped:0 overruns:0 frame:0
TX packets:3304 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:261552 (261.5 KB) TX bytes:261552 (261.5 KB)

wlp2s0 Link encap:Ethernet HWaddr 48:e2:44:a9:9b:f5
inet addr:147.252.138.6 Bcast:147.252.143.255 Mask:255.255.248.0
inet6 addr: fe80::18e8:aa01:40ec:701/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57219 errors:0 dropped:0 overruns:0 frame:0
TX packets:17844 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36931306 (36.9 MB) TX bytes:2883308 (2.8 MB)

lspci -knn | grep Eth -A3

00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
DeviceName: Onboard LAN
Subsystem: Dell Ethernet Connection (3) I218-LM [1028:062b]
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)


NetworkManager.conf:



[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true


etc/interfaces:



# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eno1
iface eno1 inet dhcp









share|improve this question





















  • Is the connection working?
    – prab4th
    Mar 12 at 12:26












up vote
1
down vote

favorite









up vote
1
down vote

favorite











This is a really weird situation - I think for some reason the ethernet connection name changed from eth0 to eno1 when I updated ubuntu. I added those changes to the etc/nework file and changed managed=true in NetworkManager.conf file, but even when the network is identiified and even seems to have an IP, there is not connection. Here's the output:



ifconfig -a

eno1 Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:20 Memory:f7200000-f7220000

eno1:avahi Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
inet addr:169.254.8.4 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:f7200000-f7220000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:3304 errors:0 dropped:0 overruns:0 frame:0
TX packets:3304 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:261552 (261.5 KB) TX bytes:261552 (261.5 KB)

wlp2s0 Link encap:Ethernet HWaddr 48:e2:44:a9:9b:f5
inet addr:147.252.138.6 Bcast:147.252.143.255 Mask:255.255.248.0
inet6 addr: fe80::18e8:aa01:40ec:701/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57219 errors:0 dropped:0 overruns:0 frame:0
TX packets:17844 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36931306 (36.9 MB) TX bytes:2883308 (2.8 MB)

lspci -knn | grep Eth -A3

00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
DeviceName: Onboard LAN
Subsystem: Dell Ethernet Connection (3) I218-LM [1028:062b]
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)


NetworkManager.conf:



[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true


etc/interfaces:



# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eno1
iface eno1 inet dhcp









share|improve this question













This is a really weird situation - I think for some reason the ethernet connection name changed from eth0 to eno1 when I updated ubuntu. I added those changes to the etc/nework file and changed managed=true in NetworkManager.conf file, but even when the network is identiified and even seems to have an IP, there is not connection. Here's the output:



ifconfig -a

eno1 Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:20 Memory:f7200000-f7220000

eno1:avahi Link encap:Ethernet HWaddr f8:ca:b8:18:a2:65
inet addr:169.254.8.4 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:f7200000-f7220000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:3304 errors:0 dropped:0 overruns:0 frame:0
TX packets:3304 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:261552 (261.5 KB) TX bytes:261552 (261.5 KB)

wlp2s0 Link encap:Ethernet HWaddr 48:e2:44:a9:9b:f5
inet addr:147.252.138.6 Bcast:147.252.143.255 Mask:255.255.248.0
inet6 addr: fe80::18e8:aa01:40ec:701/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57219 errors:0 dropped:0 overruns:0 frame:0
TX packets:17844 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36931306 (36.9 MB) TX bytes:2883308 (2.8 MB)

lspci -knn | grep Eth -A3

00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-LM [8086:15a2] (rev 03)
DeviceName: Onboard LAN
Subsystem: Dell Ethernet Connection (3) I218-LM [1028:062b]
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)


NetworkManager.conf:



[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true


etc/interfaces:



# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eno1
iface eno1 inet dhcp






16.04 networking network-manager ethernet wired






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asked Feb 6 at 12:30









Alex

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  • Is the connection working?
    – prab4th
    Mar 12 at 12:26
















  • Is the connection working?
    – prab4th
    Mar 12 at 12:26















Is the connection working?
– prab4th
Mar 12 at 12:26




Is the connection working?
– prab4th
Mar 12 at 12:26










1 Answer
1






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Is the connection working? Some time back ubuntu switched to systemd and that change moved from naming wired connections with predictable names. Now the wired connections are named with something starting with en and wireless networks with wl. Your ethernet is named eno1.






share|improve this answer




















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    down vote













    Is the connection working? Some time back ubuntu switched to systemd and that change moved from naming wired connections with predictable names. Now the wired connections are named with something starting with en and wireless networks with wl. Your ethernet is named eno1.






    share|improve this answer
























      up vote
      0
      down vote













      Is the connection working? Some time back ubuntu switched to systemd and that change moved from naming wired connections with predictable names. Now the wired connections are named with something starting with en and wireless networks with wl. Your ethernet is named eno1.






      share|improve this answer






















        up vote
        0
        down vote










        up vote
        0
        down vote









        Is the connection working? Some time back ubuntu switched to systemd and that change moved from naming wired connections with predictable names. Now the wired connections are named with something starting with en and wireless networks with wl. Your ethernet is named eno1.






        share|improve this answer












        Is the connection working? Some time back ubuntu switched to systemd and that change moved from naming wired connections with predictable names. Now the wired connections are named with something starting with en and wireless networks with wl. Your ethernet is named eno1.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 12 at 12:34









        prab4th

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