Hi folks, I'm using several dedicated server with Proxmox, all server was at Hetzner. On all that server I have added additional IP subnet and DHCP (isc-dhcp) and everything works. Now I want to use Hetzner vswitch because there I can add several IP subnet in same VLAN. In anyway I have problem with configuration. I do everything by manual from Hetzner. On fresh installed proxmox server by default I have this settings: Code: ### Hetzner Online GmbH installimage source /etc/network/interfaces.d/* auto lo iface lo inet loopback iface lo inet6 loopback auto enp2s0 iface enp2s0 inet static address 78.46.xxx.xxx netmask 255.255.xxx.xxx gateway 78.46.xxx.xxx #route 78.46.xxx.xxx via 78.46.xxx.xxx up route add -net 78.46.xxx.xxx netmask 255.255.xxx.xxx gw 78.46.xxx.xxx dev enp2s0 iface enp2s0 inet6 static address 2a01:4f8:xxx:xxx::x netmask xx gateway fexx::1 Then by Hetzner manual I need to add subnet on vswitch over they robot interface and need to assign some vlan ID. That is done. Than I need to do next: Example configuration for the network card "enp0s31f6", with the VLAN ID 4000 Create a VLAN device Code: ip link add link enp0s31f6 name enp0s31f6.4000 type vlan id 4000 ip link set enp0s31f6.4000 mtu 1400 ip link set dev enp0s31f6.4000 up Configure IP address 192.168.100.1 from the private subnet 192.168.100.0/24 Code: ip addr add 192.168.100.1/24 brd 192.168.100.255 dev enp0s31f6.4000 Public subnet You need to create an additional routing table for the public subnet so you can configure another default gateway. Example configuration for IP 22.214.171.124 from the public subnet 126.96.36.199/29, interface enp0s31f6.4000 Code: echo "1 vswitch" >> /etc/iproute2/rt_tables ip addr add 188.8.131.52/29 dev enp0s31f6.4000 ip rule add from 184.108.40.206 lookup vswitch ip rule add to 220.127.116.11 lookup vswitch ip route add default via 18.104.22.168 dev enp0s31f6.4000 table vswitch Example Debian configuration Interface enp0s31f6, VLAN 4000, private network Code: # /etc/network/interfaces auto enp0s31f6.4000 iface enp0s31f6.4000 inet static address 192.168.100.1 netmask 255.255.255.0 vlan-raw-device enp0s31f6 mtu 1400 When I did it, I just added vmbr0 interface Code: auto vmbr0 iface vmbr0 inet static address 192.168.100.2 netmask 255.255.255.0 bridge_ports enp2s0.4000 bridge_stp off bridge_fd 0 When I create and install ubuntu on Proxmox and assign this IP (this is from manual, example IP, not real) 22.214.171.124 I can ping everything but I can't do apt-get update or curl. DNS resolve hostname but not traffic. When I do traceroute from my computer to 126.96.36.199 they finish without problem. When I try to connect over ssh, I can connect and login, but if I try to do something stop responding, on example top or ps aux.