Hey there,
have a small problem:
Bought a SoYouStart (OVH) Black friday Server, and have set it up with Proxmox (have serveral Proxmox server @ OVH)
But this is the first time with Debian 10 (Buster) as Guest KVM, the usual network config doesnt work for some reason, did anything change in Buster?
Error "Network is unreachable"
Some other KVM´s with Debian 8 and 9 have no Problem
Any Idea? Thanks in advance
have a small problem:
Bought a SoYouStart (OVH) Black friday Server, and have set it up with Proxmox (have serveral Proxmox server @ OVH)
But this is the first time with Debian 10 (Buster) as Guest KVM, the usual network config doesnt work for some reason, did anything change in Buster?
Error "Network is unreachable"
Some other KVM´s with Debian 8 and 9 have no Problem
proxmox-ve: 5.4-2 (running kernel: 4.15.18-23-pve)
pve-manager: 5.4-13 (running version: 5.4-13/aee6f0ec)
pve-kernel-4.15: 5.4-11
pve-kernel-4.15.18-23-pve: 4.15.18-51
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-12
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-55
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-14
libpve-storage-perl: 5.0-44
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-7
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-28
pve-cluster: 5.0-38
pve-container: 2.0-41
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-22
pve-firmware: 2.0-7
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 3.0.1-4
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-54
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
pve-manager: 5.4-13 (running version: 5.4-13/aee6f0ec)
pve-kernel-4.15: 5.4-11
pve-kernel-4.15.18-23-pve: 4.15.18-51
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-12
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-55
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-14
libpve-storage-perl: 5.0-44
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-7
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-28
pve-cluster: 5.0-38
pve-container: 2.0-41
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-22
pve-firmware: 2.0-7
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 3.0.1-4
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-54
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
auto vmbr0
iface vmbr0 inet static
address 46.xxx.xxx.xxx/24
gateway 46.xxx.xxx.254
bridge_ports eno1
bridge_stp off
bridge_fd 0
#Main-VM´s
auto vmbr1
iface vmbr1 inet static
address 192.168.10.254
netmask 255.255.255.0
bridge_ports dummy0
bridge_stp off
bridge_fd 0
#NAT Device
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '192.168.10.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '192.168.10.0/24' -o vmbr0 -j MASQUERADE
iface vmbr0 inet static
address 46.xxx.xxx.xxx/24
gateway 46.xxx.xxx.254
bridge_ports eno1
bridge_stp off
bridge_fd 0
#Main-VM´s
auto vmbr1
iface vmbr1 inet static
address 192.168.10.254
netmask 255.255.255.0
bridge_ports dummy0
bridge_stp off
bridge_fd 0
#NAT Device
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '192.168.10.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '192.168.10.0/24' -o vmbr0 -j MASQUERADE
auto lo ens18
iface lo inet loopback
iface ens18 inet static
address 51.xxx.xxx.xxx
netmask 255.255.255.255
broadcast 51.xxx.xxx.xxx
post-up ip route add 46.xxx.xxx.254 dev ens18
post-up ip route add default via 46.xxx.xxx.254
pre-down ip route del 46.xxx.xxx.254 dev ens18
pre-down ip route del default via 46.xxx.xxx.254
iface lo inet loopback
iface ens18 inet static
address 51.xxx.xxx.xxx
netmask 255.255.255.255
broadcast 51.xxx.xxx.xxx
post-up ip route add 46.xxx.xxx.254 dev ens18
post-up ip route add default via 46.xxx.xxx.254
pre-down ip route del 46.xxx.xxx.254 dev ens18
pre-down ip route del default via 46.xxx.xxx.254
Any Idea? Thanks in advance
Last edited:
