Ethernet connection not able to connect to default gateway
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My Ethernet connection started randomly dropping. When I try to disable and enable networking, the system is not able to request a DHCP IP address. When I ping the default gateway in a non-working state I get:
connect: Network is unreachable
in a non-working state, ifconfig returns
enp3s15: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500`
inet6 fe80::1810:354a:f174:7106 prefixlen 64 scopeid 0x20<link>
ether 00:1d:7d:9c:7c:63 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 704643030 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 429 bytes 27977 (27.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 429 bytes 27977 (27.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
in a working state,sudo lshw -class network | grep -A14 -i "Ethernet interface" returns:
description: Ethernet interface
product: RTL-8110SC/8169SC Gigabit Ethernet
vendor: Realtek Semiconductor Co., Ltd.
physical id: f
bus info: pci@0000:03:0f.0
logical name: enp3s15
version: 10
serial: 00:1d:7d:9c:7c:63
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.26 latency=64 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=1Gbit/s
resources: irq:23 ioport:ce00(size=256) memory:fdcfe000-fdcfe0ff memory:fdb00000-fdb1ffff
in a working state, ip addr show returns:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:1d:7d:9c:7c:63 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.26/24 brd 192.168.0.255 scope global dynamic noprefixroute enp3s15
valid_lft 3015sec preferred_lft 3015sec
inet6 fe80::1810:354a:f174:7106/64 scope link noprefixroute
valid_lft forever preferred_lft forever
in a working state,nmcli device returns:
DEVICE TYPE STATE CONNECTION
enp3s15 ethernet connected Wired connection 1
lo loopback unmanaged --
Sometimes rebooting helps. Sometimes not.
This is really strange. This machine has been running forever with no issues like this.
Version info:
lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
networking ethernet troubleshooting
asked Apr 7 at 4:42
DevehfDevehf
12
add a comment |
0
My Ethernet connection started randomly dropping. When I try to disable and enable networking, the system is not able to request a DHCP IP address. When I ping the default gateway in a non-working state I get:
connect: Network is unreachable
in a non-working state, ifconfig returns
enp3s15: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500`
inet6 fe80::1810:354a:f174:7106 prefixlen 64 scopeid 0x20<link>
ether 00:1d:7d:9c:7c:63 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 704643030 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 429 bytes 27977 (27.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 429 bytes 27977 (27.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
in a working state,sudo lshw -class network | grep -A14 -i "Ethernet interface" returns:
description: Ethernet interface
product: RTL-8110SC/8169SC Gigabit Ethernet
vendor: Realtek Semiconductor Co., Ltd.
physical id: f
bus info: pci@0000:03:0f.0
logical name: enp3s15
version: 10
serial: 00:1d:7d:9c:7c:63
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.26 latency=64 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=1Gbit/s
resources: irq:23 ioport:ce00(size=256) memory:fdcfe000-fdcfe0ff memory:fdb00000-fdb1ffff
in a working state, ip addr show returns:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:1d:7d:9c:7c:63 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.26/24 brd 192.168.0.255 scope global dynamic noprefixroute enp3s15
valid_lft 3015sec preferred_lft 3015sec
inet6 fe80::1810:354a:f174:7106/64 scope link noprefixroute
valid_lft forever preferred_lft forever
in a working state,nmcli device returns:
DEVICE TYPE STATE CONNECTION
enp3s15 ethernet connected Wired connection 1
lo loopback unmanaged --
Sometimes rebooting helps. Sometimes not.
This is really strange. This machine has been running forever with no issues like this.
Version info:
lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
networking ethernet troubleshooting
asked Apr 7 at 4:42
DevehfDevehf
12
Please edit your question and post output of the following commands: 1.sudo lshw -class network | grep -A14 -i "Ethernet interface"2.ip addr showand 3.nmcli device. Are you installed with Ubuntu 18.04?
– Marmayogi
Apr 7 at 11:59
add a comment |
0
0
0
My Ethernet connection started randomly dropping. When I try to disable and enable networking, the system is not able to request a DHCP IP address. When I ping the default gateway in a non-working state I get:
connect: Network is unreachable
in a non-working state, ifconfig returns
enp3s15: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500`
inet6 fe80::1810:354a:f174:7106 prefixlen 64 scopeid 0x20<link>
ether 00:1d:7d:9c:7c:63 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 704643030 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 429 bytes 27977 (27.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 429 bytes 27977 (27.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
in a working state,sudo lshw -class network | grep -A14 -i "Ethernet interface" returns:
description: Ethernet interface
product: RTL-8110SC/8169SC Gigabit Ethernet
vendor: Realtek Semiconductor Co., Ltd.
physical id: f
bus info: pci@0000:03:0f.0
logical name: enp3s15
version: 10
serial: 00:1d:7d:9c:7c:63
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.26 latency=64 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=1Gbit/s
resources: irq:23 ioport:ce00(size=256) memory:fdcfe000-fdcfe0ff memory:fdb00000-fdb1ffff
in a working state, ip addr show returns:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:1d:7d:9c:7c:63 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.26/24 brd 192.168.0.255 scope global dynamic noprefixroute enp3s15
valid_lft 3015sec preferred_lft 3015sec
inet6 fe80::1810:354a:f174:7106/64 scope link noprefixroute
valid_lft forever preferred_lft forever
in a working state,nmcli device returns:
DEVICE TYPE STATE CONNECTION
enp3s15 ethernet connected Wired connection 1
lo loopback unmanaged --
Sometimes rebooting helps. Sometimes not.
This is really strange. This machine has been running forever with no issues like this.
Version info:
lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
networking ethernet troubleshooting
asked Apr 7 at 4:42
DevehfDevehf
12
My Ethernet connection started randomly dropping. When I try to disable and enable networking, the system is not able to request a DHCP IP address. When I ping the default gateway in a non-working state I get:
connect: Network is unreachable
in a non-working state, ifconfig returns
enp3s15: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500`
inet6 fe80::1810:354a:f174:7106 prefixlen 64 scopeid 0x20<link>
ether 00:1d:7d:9c:7c:63 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 704643030 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 429 bytes 27977 (27.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 429 bytes 27977 (27.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
in a working state,sudo lshw -class network | grep -A14 -i "Ethernet interface" returns:
description: Ethernet interface
product: RTL-8110SC/8169SC Gigabit Ethernet
vendor: Realtek Semiconductor Co., Ltd.
physical id: f
bus info: pci@0000:03:0f.0
logical name: enp3s15
version: 10
serial: 00:1d:7d:9c:7c:63
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 66MHz
capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.26 latency=64 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=1Gbit/s
resources: irq:23 ioport:ce00(size=256) memory:fdcfe000-fdcfe0ff memory:fdb00000-fdb1ffff
in a working state, ip addr show returns:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:1d:7d:9c:7c:63 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.26/24 brd 192.168.0.255 scope global dynamic noprefixroute enp3s15
valid_lft 3015sec preferred_lft 3015sec
inet6 fe80::1810:354a:f174:7106/64 scope link noprefixroute
valid_lft forever preferred_lft forever
in a working state,nmcli device returns:
DEVICE TYPE STATE CONNECTION
enp3s15 ethernet connected Wired connection 1
lo loopback unmanaged --
Sometimes rebooting helps. Sometimes not.
This is really strange. This machine has been running forever with no issues like this.
Version info:
lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
networking ethernet troubleshooting
networking ethernet troubleshooting
asked Apr 7 at 4:42
DevehfDevehf
12
asked Apr 7 at 4:42
DevehfDevehf
12
edited Apr 7 at 15:41
Devehf
asked Apr 7 at 4:42
DevehfDevehf
12
asked Apr 7 at 4:42
DevehfDevehf
12
asked Apr 7 at 4:42
DevehfDevehf
12
12
Please edit your question and post output of the following commands: 1.sudo lshw -class network | grep -A14 -i "Ethernet interface"2.ip addr showand 3.nmcli device. Are you installed with Ubuntu 18.04?
– Marmayogi
Apr 7 at 11:59
add a comment |
Please edit your question and post output of the following commands: 1.sudo lshw -class network | grep -A14 -i "Ethernet interface"2.ip addr showand 3.nmcli device. Are you installed with Ubuntu 18.04?
– Marmayogi
Apr 7 at 11:59
Please edit your question and post output of the following commands: 1.
sudo lshw -class network | grep -A14 -i "Ethernet interface" 2. ip addr show and 3.nmcli device. Are you installed with Ubuntu 18.04?– Marmayogi
Apr 7 at 11:59
Please edit your question and post output of the following commands: 1.
sudo lshw -class network | grep -A14 -i "Ethernet interface" 2. ip addr show and 3.nmcli device. Are you installed with Ubuntu 18.04?– Marmayogi
Apr 7 at 11:59
add a comment |
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Please edit your question and post output of the following commands: 1.
sudo lshw -class network | grep -A14 -i "Ethernet interface"2.ip addr showand 3.nmcli device. Are you installed with Ubuntu 18.04?– Marmayogi
Apr 7 at 11:59