[SOLVED] No internet on vmbr1

[steelyx]

I have a limited amount of ip adresses, so I am trying to forward some of my proxmox ports to the vm. But when I put my vm on vmbr1 and give it ip 192.168.10.245 and gateway 192.168.10.241 it won't let me access the internet. The vm is a ubuntu server.

 

[cheiss]

Hi,

you still need to configure routing/NATing between those two bridges. Otherwise, all traffic stays on vmbr1 and cannot leave it.

Have a look at our Masquerading (NAT) with iptables guide, that should explain what's needed here.

Hope this helps!

 

[steelyx]

Hi,

you still need to configure routing/NATing between those two bridges. Otherwise, all traffic stays on vmbr1 and cannot leave it.

Have a look at our Masquerading (NAT) with iptables guide, that should explain what's needed here.

Hope this helps!

Ok, I got a connection to the internet now, but simple features in the vm like apt update and upgrade do not work. The pings I have done have been successful

 

[cheiss]

Ok, I got a connection to the internet now, but simple features in the vm like apt update and upgrade do not work. The pings I have done have been successful

That sounds like you haven't set up DNS correctly. But you need to share some more information.

What's configured on the host? How do the guests get their IP/DNS? Static/DHCP? What is their network configuration? Etc.

 

[steelyx]

That sounds like you haven't set up DNS correctly. But you need to share some more information.

What's configured on the host? How do the guests get their IP/DNS? Static/DHCP? What is their network configuration? Etc.

host:

VM:

 

[cheiss]

Hi,

can you please post the output of ip a, ip r and apt update from inside the VM?
They should provide some valuable information, as the contain the currently used configuration. The netplan e.g. might not get applied (correctly).

Further, please provide the output from the host of iptables -L -t nat, to confirm the NAT rules are in place.

 

[steelyx]

Hi,

can you please post the output of ip a, ip r and apt update from inside the VM?
They should provide some valuable information, as the contain the currently used configuration. The netplan e.g. might not get applied (correctly).

Further, please provide the output from the host of iptables -L -t nat, to confirm the NAT rules are in place.

Host:

VM:

 

[steelyx]

Hi,

can you please post the output of ip a, ip r and apt update from inside the VM?
They should provide some valuable information, as the contain the currently used configuration. The netplan e.g. might not get applied (correctly).

Further, please provide the output from the host of iptables -L -t nat, to confirm the NAT rules are in place.

Ok, I actually fixed it. Just reset the iptable and reloaded the interface and now it works.

I do not fully understand iptables so can you help me just forwarding some of my ports to the VM? I am hosting a webserver

 

[steelyx]

Hi,

can you please post the output of ip a, ip r and apt update from inside the VM?
They should provide some valuable information, as the contain the currently used configuration. The netplan e.g. might not get applied (correctly).

Further, please provide the output from the host of iptables -L -t nat, to confirm the NAT rules are in place.

Nevermind I figured it out, thx for the help