Network Bridge - Hetzner - Cant get it to work

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No1IrishStig

New Member
Sep 11, 2020
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Hi, I have been trying so many different things online. And I cannot get this to work. I want my VM's to have seperate IP's from the host through the bridge. But it isnt working.

Host IP: 138.201.142.159
Secondary IP: 138.201.142.151
Gateway: 138.201.142.129
Netmask: 255.255.255.192
Broadcast: 138.201.142.191

n0ioi.png


This is how it looks on the Network tab on Proxmox. Here is my etc/network/interfaces file for the host:

djk2e.png


-----------------

On the VM, I was able to capture this as it flew by, im not sure which log file it is in to get the full thing.

j440x.png


For the /etc/network/interfaces file on the guest I have this configuration as guided by Hetzners own docs:

zj9kq.png


I am able to ping the host, and ping the guest from the host and get a response. However I cannot contact any outside servers with the guest.

Running `sudo apt-get update` responds with this:

6w6t1.png


I cant ping any servers outside, besides the host.


Please help! I am quite a newbie when it comes to networking and making bridges and stuff. So I might need a big extra explaination than your average joe. Thanks in advance!
 
hi,

if your VM is just test, can you try the following instructions?

- edit file resolv.conf in Ubuntu VM, and put the nameserver for hetzner:
Moayad said:
nameserver 213.133.100.100
nameserver 213.133.98.98
nameserver 213.133.99.99
Click to expand...


then change attributes for resolv.conf file with command:
chattr +i /etc/resolv.conf
then reboot your VM, && ping -c 3 google.com,

if that not works

- try to edit /etc/network/interfaces in your Ubuntu VM and just add this lines after under gateway 138.201.142.129

Code: 
dns-nameservers 213.133.100.100
dns-nameservers 213.133.98.98
dns-nameservers 213.133.98.99


Hopefully that help :)
 
Moayad said:
hi,

if your VM is just test, can you try the following instructions?

- edit file resolv.conf in Ubuntu VM, and put the nameserver for hetzner:



then change attributes for resolv.conf file with command:
chattr +i /etc/resolv.conf
then reboot your VM, && ping -c 3 google.com,

if that not works

- try to edit /etc/network/interfaces in your Ubuntu VM and just add this lines after under gateway 138.201.142.129

Code: 
dns-nameservers 213.133.100.100
dns-nameservers 213.133.98.98
dns-nameservers 213.133.98.99


Hopefully that help :)
Click to expand...
Hi, firstly adding the name servers to the resolv file gave this:

rg05f.png


The second thing, I added it to the network interface below gateway, and it doesnt change anything:

5hv2s.png


:(
 
I managed to get the VPS's working by adding a bridge port. But I've ran into a new issue.

After a period of time the hosts IP becomes unresponsive, after the host has not even been doing anything besides running 2 - 3 virtual machines. All of the VM's still have internet access and can be used, however the Host cannot. Anyone ever had this issue? Its very frustrating because each time I want to use the host I have to login through a guest then ssh into the host, then restart the networking service. Once the service has been restarted I can ssh into the host again, but then all the VM's die. Its a vicious loop. Please help!
 
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