no network connection

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mason64

Member
Apr 18, 2022
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Hi

I did a upgrade from 8.4 to 9.01 and i think something has gone wrong, i cant seem to get a network connection any more. see screen shots below

1755961261435.png

and my interface file looks like this

1755961342039.png
am not sure what do to next? am i even looking in the right place?

is there a network manager in proxmox?

Thanks
dave
 
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i have tried removing 1 of them and even copying the default interface file with my network setup and still says my state is down :(

when i do systemclt status networking.service i get an error - see video attached - sorry its abit shakey cant type and hold my phone :)

https://streamable.com/iul59p
 
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comment out both lines with: auto enp0s31f6

comment out line with: iface enp0s31f6 auto

make sure you still have: iface enp0s31f6 manual

make sure you still have the rest of the vmbr0 config, including bridge-ports enp0s31f6

That should do it. May require a reboot.
 
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Search for "RawConfigParser" here in the forum. There are some marked "solved", perhaps you are lucky to find a solution...
 
Besides the issues with the network configuration, the NO-CARRIER suggest a missing or bad(ly connected) cable or broken port(s) that prevent signals from traveling between the system and the router/gateway. (Or maybe this will fix itself when the configuration is fixed?)
 
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leesteken said:
Besides the issues with the network configuration, the NO-CARRIER suggest a missing or bad(ly connected) cable or broken port(s) that prevent signals from traveling between the system and the router/gateway. (Or maybe this will fix itself when the configuration is fixed?)
Click to expand...
Thanks ports and cables are fine, they have all been tested.
 
thanks everyone for the help so far.

if i run the command ip addr add 10.0.0.207/24 dev enp0s31f6 and then run ip link set enp0s31f6 up i get state UP but no access still to the internet or to the pve on my browser i can ping machines on the network but not externally.

this is my current interface network config is that all ok now/?

1756043492058.jpeg

If i reboot it goes back to all not working.

Anything i could be missing?
 
In your current /etc/network/interfaces the line iface enp0s31f6 manual should read:
Code: 
iface enp0s31f6 inet manual
 
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hi @gfngfn256 tried that thanks but still the same. i can ping the router and internal but nothing external and i cant get on the pve gui but i can ping the IP 10.0.0.207 from my pc
 
to add to that i can now ssh in to my box. but if i reboot the system i have to go and do the whole of the above again with the " ip addr add 10.0.0.207/24 dev enp0s31f6 and then run ip link set enp0s31f6 up"
 
mason64 said:
router and internal but nothing external
Click to expand...
I'm not sure what "internal/external" means here contextually.

Could you briefly explain your NW structure; router, switches & devices.


mason64 said:
but if i reboot the system i have to go and do the whole of the above again
Click to expand...
Could you show the current output of ip a after rebooting, but before doing anything "of the above".

What address are you using in attempting to connect to the PVE GUI?
(You maybe having DNS issues, it's always dns!).
 
gfngfn256 said:
I'm not sure what "internal/external" means here contextually.

Could you briefly explain your NW structure; router, switches & devices.



Could you show the current output of ip a after rebooting, but before doing anything "of the above".

What address are you using in attempting to connect to the PVE GUI?
(You maybe having DNS issues, it's always dns!).
Click to expand...
sorry external means the outside world (the internet) internal means local network,

1756064649427.png

thats waht it looks like after a reboot @gfngfn256
 
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