Ubuntu 18.04 route to the gateway
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i just start to use the Ubuntu 18.04. When i try to set up the static IPs on that VM. i can't access the internet. But if i switch to use the gateway as the DHCP device, it works. Any idea what went wrong?
Attached is a screenshot for the ouput of route -n and netplan configuration fileenter image description here
Here is the output if i switch to use the gateway for DHCP:
root@ubuntu:~# cat /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
ens6:
# addresses: [46.16.78.229/24]
dhcp4: yes
# nameservers:
# addresses: [46.16.78.1]
# routes:
# - to: 0.0.0.0/0
# via: 46.16.78.1
# on-link: true
# gateway4: 46.16.78.1
ens7:
dhcp4: no
addresses: [10.14.160.15/24]
root@ubuntu:~# ip route
default via 46.16.78.1 dev ens6 proto dhcp src 46.16.78.29 metric 100
10.14.160.0/24 dev ens7 proto kernel scope link src 10.14.160.15
46.16.78.1 dev ens6 proto dhcp scope link src 46.16.78.29 metric 100
root@ubuntu:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 46.16.78.1 0.0.0.0 UG 100 0 0 ens6
10.14.160.0 0.0.0.0 255.255.255.0 U 0 0 0 ens7
46.16.78.1 0.0.0.0 255.255.255.255 UH 100 0 0 ens6
18.04 netplan
asked Dec 4 at 11:24
Chao Yuan
11
add a comment |
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i just start to use the Ubuntu 18.04. When i try to set up the static IPs on that VM. i can't access the internet. But if i switch to use the gateway as the DHCP device, it works. Any idea what went wrong?
Attached is a screenshot for the ouput of route -n and netplan configuration fileenter image description here
Here is the output if i switch to use the gateway for DHCP:
root@ubuntu:~# cat /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
ens6:
# addresses: [46.16.78.229/24]
dhcp4: yes
# nameservers:
# addresses: [46.16.78.1]
# routes:
# - to: 0.0.0.0/0
# via: 46.16.78.1
# on-link: true
# gateway4: 46.16.78.1
ens7:
dhcp4: no
addresses: [10.14.160.15/24]
root@ubuntu:~# ip route
default via 46.16.78.1 dev ens6 proto dhcp src 46.16.78.29 metric 100
10.14.160.0/24 dev ens7 proto kernel scope link src 10.14.160.15
46.16.78.1 dev ens6 proto dhcp scope link src 46.16.78.29 metric 100
root@ubuntu:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 46.16.78.1 0.0.0.0 UG 100 0 0 ens6
10.14.160.0 0.0.0.0 255.255.255.0 U 0 0 0 ens7
46.16.78.1 0.0.0.0 255.255.255.255 UH 100 0 0 ens6
18.04 netplan
asked Dec 4 at 11:24
Chao Yuan
11
Do not post text as images. Copy the relevant text, and apply code formatting on SE.
– vidarlo
Dec 4 at 11:34
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
i just start to use the Ubuntu 18.04. When i try to set up the static IPs on that VM. i can't access the internet. But if i switch to use the gateway as the DHCP device, it works. Any idea what went wrong?
Attached is a screenshot for the ouput of route -n and netplan configuration fileenter image description here
Here is the output if i switch to use the gateway for DHCP:
root@ubuntu:~# cat /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
ens6:
# addresses: [46.16.78.229/24]
dhcp4: yes
# nameservers:
# addresses: [46.16.78.1]
# routes:
# - to: 0.0.0.0/0
# via: 46.16.78.1
# on-link: true
# gateway4: 46.16.78.1
ens7:
dhcp4: no
addresses: [10.14.160.15/24]
root@ubuntu:~# ip route
default via 46.16.78.1 dev ens6 proto dhcp src 46.16.78.29 metric 100
10.14.160.0/24 dev ens7 proto kernel scope link src 10.14.160.15
46.16.78.1 dev ens6 proto dhcp scope link src 46.16.78.29 metric 100
root@ubuntu:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 46.16.78.1 0.0.0.0 UG 100 0 0 ens6
10.14.160.0 0.0.0.0 255.255.255.0 U 0 0 0 ens7
46.16.78.1 0.0.0.0 255.255.255.255 UH 100 0 0 ens6
18.04 netplan
asked Dec 4 at 11:24
Chao Yuan
11
i just start to use the Ubuntu 18.04. When i try to set up the static IPs on that VM. i can't access the internet. But if i switch to use the gateway as the DHCP device, it works. Any idea what went wrong?
Attached is a screenshot for the ouput of route -n and netplan configuration fileenter image description here
Here is the output if i switch to use the gateway for DHCP:
root@ubuntu:~# cat /etc/netplan/01-netcfg.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
ens6:
# addresses: [46.16.78.229/24]
dhcp4: yes
# nameservers:
# addresses: [46.16.78.1]
# routes:
# - to: 0.0.0.0/0
# via: 46.16.78.1
# on-link: true
# gateway4: 46.16.78.1
ens7:
dhcp4: no
addresses: [10.14.160.15/24]
root@ubuntu:~# ip route
default via 46.16.78.1 dev ens6 proto dhcp src 46.16.78.29 metric 100
10.14.160.0/24 dev ens7 proto kernel scope link src 10.14.160.15
46.16.78.1 dev ens6 proto dhcp scope link src 46.16.78.29 metric 100
root@ubuntu:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 46.16.78.1 0.0.0.0 UG 100 0 0 ens6
10.14.160.0 0.0.0.0 255.255.255.0 U 0 0 0 ens7
46.16.78.1 0.0.0.0 255.255.255.255 UH 100 0 0 ens6
18.04 netplan
18.04 netplan
asked Dec 4 at 11:24
Chao Yuan
11
asked Dec 4 at 11:24
Chao Yuan
11
edited Dec 4 at 11:51
asked Dec 4 at 11:24
Chao Yuan
11
asked Dec 4 at 11:24
Chao Yuan
11
asked Dec 4 at 11:24
Chao Yuan
11
11
Do not post text as images. Copy the relevant text, and apply code formatting on SE.
– vidarlo
Dec 4 at 11:34
add a comment |
Do not post text as images. Copy the relevant text, and apply code formatting on SE.
– vidarlo
Dec 4 at 11:34
Do not post text as images. Copy the relevant text, and apply code formatting on SE.
– vidarlo
Dec 4 at 11:34
Do not post text as images. Copy the relevant text, and apply code formatting on SE.
– vidarlo
Dec 4 at 11:34
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
Change the
adresses: [46.16.78.229/32]
to
adresses: [46.16.78.229/24]
/32 indicates that it is a subnet with only 46.16.78.229 in the network, with no access to any other IP addresses. Thus your computer has no idea of how to reach your configured GW.
answered Dec 4 at 11:33
vidarlo
8,76842342
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output ofip routewith the correct configuration.
– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output ofip routewhen you have the corrected configuration in place, not DHCP.
– vidarlo
Dec 5 at 8:46
add a comment |
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1 Answer
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oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
Change the
adresses: [46.16.78.229/32]
to
adresses: [46.16.78.229/24]
/32 indicates that it is a subnet with only 46.16.78.229 in the network, with no access to any other IP addresses. Thus your computer has no idea of how to reach your configured GW.
answered Dec 4 at 11:33
vidarlo
8,76842342
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output ofip routewith the correct configuration.
– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output ofip routewhen you have the corrected configuration in place, not DHCP.
– vidarlo
Dec 5 at 8:46
add a comment |
up vote
0
down vote
Change the
adresses: [46.16.78.229/32]
to
adresses: [46.16.78.229/24]
/32 indicates that it is a subnet with only 46.16.78.229 in the network, with no access to any other IP addresses. Thus your computer has no idea of how to reach your configured GW.
answered Dec 4 at 11:33
vidarlo
8,76842342
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output ofip routewith the correct configuration.
– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output ofip routewhen you have the corrected configuration in place, not DHCP.
– vidarlo
Dec 5 at 8:46
add a comment |
up vote
0
down vote
up vote
0
down vote
Change the
adresses: [46.16.78.229/32]
to
adresses: [46.16.78.229/24]
/32 indicates that it is a subnet with only 46.16.78.229 in the network, with no access to any other IP addresses. Thus your computer has no idea of how to reach your configured GW.
answered Dec 4 at 11:33
vidarlo
8,76842342
Change the
adresses: [46.16.78.229/32]
to
adresses: [46.16.78.229/24]
/32 indicates that it is a subnet with only 46.16.78.229 in the network, with no access to any other IP addresses. Thus your computer has no idea of how to reach your configured GW.
answered Dec 4 at 11:33
vidarlo
8,76842342
answered Dec 4 at 11:33
vidarlo
8,76842342
answered Dec 4 at 11:33
vidarlo
8,76842342
answered Dec 4 at 11:33
vidarlo
8,76842342
8,76842342
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output ofip routewith the correct configuration.
– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output ofip routewhen you have the corrected configuration in place, not DHCP.
– vidarlo
Dec 5 at 8:46
add a comment |
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output ofip routewith the correct configuration.
– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output ofip routewhen you have the corrected configuration in place, not DHCP.
– vidarlo
Dec 5 at 8:46
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
i tried to change to /24, but it still does't work..
– Chao Yuan
Dec 4 at 11:44
Update your question with the output of
ip route with the correct configuration.– vidarlo
Dec 4 at 11:46
Update your question with the output of
ip route with the correct configuration.– vidarlo
Dec 4 at 11:46
just updated the output
– Chao Yuan
Dec 4 at 12:36
just updated the output
– Chao Yuan
Dec 4 at 12:36
1
1
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
The 'ip route' information shown corresponds to a dhcp-provided route, not to a statically configured route. This is clearly inconsistent. Listing /32 in the addresses is clearly wrong, switching this to /24 reliably fixes this problem.
– slangasek
Dec 5 at 8:43
Indeed. Please provide output of
ip route when you have the corrected configuration in place, not DHCP.– vidarlo
Dec 5 at 8:46
Indeed. Please provide output of
ip route when you have the corrected configuration in place, not DHCP.– vidarlo
Dec 5 at 8:46
add a comment |
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