Network error with container/VMs | 101: Network is unreachable | Hetzner

[Floppic]

Hello everybody,

I've been having this problem for a couple of days now.
I can't describe the error really well.
For example, I can't install new packages on my containers/VMs (Ubuntu 16.04), a ping on google.de works.

The weird thing is, a few days ago everything ran with the same network configuration without problems.
I rented my server from Hetzner.

On the host system the network is working now.

Many thanks for your help!

Greetings
Floppic

Spoiler: Host - Network configuration

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback

iface lo inet6 loopback

auto enp3s0
iface enp3s0 inet static
        address  5.9.***.23
        netmask  255.255.255.224
        gateway  5.9.***.1
        pointopoint 5.9.***.1

iface enp3s0 inet6 static
        address  2a01:***:***:4141::2
        netmask  64
        gateway  fe80::1

auto vmbr0
iface vmbr0 inet static
address  5.9.***.23
        netmask  32
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        brigge_maxwait 0
        up ip route add 5.9.***.90/32 dev vmbr0
        up ip route add 5.9.***.91/32 dev vmbr0
        up ip route add 5.9.***.86/32 dev vmbr0

iface vmbr0 inet6 static
        address  2a01:***:***:4141::2
        netmask  64

Spoiler: Container - Network configuration

auto lo
iface lo inet loopback
iface lo inet6 loopback

# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto eth0
iface eth0 inet static
        address 5.9.***.90
        netmask 255.255.255.255
# --- BEGIN PVE ---
        post-up ip route add 5.9.***.23 dev eth0
        post-up ip route add default via 5.9.***.23 dev eth0
        pre-down ip route del default via 5.9.***.23 dev eth0
        pre-down ip route del 5.9.***.23 dev eth0
# --- END PVE ---

Spoiler: VM - Network configuration

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address 5.9.***.86
        netmask 255.255.255.255
        pointopoint 5.9.***.23
        gateway 5.9.***.23

 

[Alwin]

Please don't double post. This makes it harder and more confusing for everyone.
https://forum.proxmox.com/threads/n...vms-101-network-is-unreachable-hetzner.60359/