[SOLVED] Problem with hetzner ipv4 on baremetal

[popallo]

Hello everyone, after hours of fruitless research I'm turning to the community .

I have three hetzner servers, running proxmox 8 (latest kernel), on which I have an ipv4 configuration problem.

When setting up the servers, I had only taken ipv6. No worries there and I set up the three servers in the same way, via opentofu.

Then I needed to add ipv4, so I ordered ipv4s from hetzner.

After adding the ips/gateway in the interface (/etc/network/interfaces), in the same way on the three servers, only one of the three has ipv4 access to the Internet. The other two don't.

So I contacted hetzner to see if the problem could not have come from their side, but unfortunately they tell me that everything works. All I have to do is start the server in rescue mode and it works.

A reboot in normal mode: no more access via ipv4.

I've done all sorts of configuration tests, via vmbr0 etc., but nothing's helped.

The network configuration is identical to that in rescue mode, so I don't see what I can do to resolve the situation.

For testing purposes, I've disabled ufw and cleaned up the iptables rules. But that doesn't change anything.

I'm still stuck with: can't ping the gateway and arp level problem:

Address HWtype HWaddress Flags Mask Iface
static.xx-xx-xx-xx.cl (incomplete) enp41s0
harmonynode03 ether a8:a1:59:ed:f3:f0 C vmbr0
harmonynode01 ether 04:42:1a:a8:20:88 C vmbr0

And I don't know what else to check / do. Any suggestions will be appreciated.

Thanks in advance for any help.

 

[popallo]

Hello everyone.

I didn't find the reason but I found a solution. I disabled IPv6 and it goes to IPv4.

I thought that by reactivating IPv6 it wouldn't work again, but it continues to work.

So I don't see why such an effect but oh well. The important thing is that it works.

Thanks to those who read and took the time to search for a solution.