title: Proxmox CT have no internet connection, host trouble?
body: <p>I have a CT with no internet connection but LAN is OK.
  Another one with same configuration works. I try to restore a backup at a time CT works, but no sucess.
  I can use LAN service of CT and ping some LAN IP, but not router IP and not resolv and ping something on WAN.</p>
  
  <p>Maybe the problem come from the hostn but don't know what to do.</p>
  
  <p>This is the CT config :</p>
  
  <pre><code>root@emeraude:~# cat /etc/resolv.conf
  # --- BEGIN PVE ---
  search home.aerith.fr
  nameserver 192.168.0.1
  nameserver 80.10.246.2
  nameserver 80.10.246.129
  # --- END PVE ---
  root@emeraude:~# cat /etc/network/interfaces
  auto lo
  iface lo inet loopback
  
  auto eth0
  iface eth0 inet static
          address 192.168.0.2
          netmask 255.255.255.0
          gateway 192.168.0.1
  
  root@emeraude:~# ip ad
  1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
      inet 127.0.0.1/8 scope host lo
         valid_lft forever preferred_lft forever
      inet6 ::1/128 scope host
         valid_lft forever preferred_lft forever
  25: eth0@if26: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue state UP group default qlen 1000
      link/ether 2a:ee:e0:31:db:4e brd ff:ff:ff:ff:ff:ff link-netnsid 0
      inet 192.168.0.2/24 brd 192.168.0.255 scope global eth0
         valid_lft forever preferred_lft forever
      inet6 fe80::28ee:e0ff:fe31:db4e/64 scope link
         valid_lft forever preferred_lft forever
  </code></pre>
  
  <p>This is the host config :</p>
  
  <pre><code>root@rubis:~# cat /etc/resolv.conf
  search home.aerith.fr
  nameserver 192.168.0.1
  nameserver 80.10.246.2
  nameserver 80.10.246.129
  root@rubis:~# cat /etc/network/interfaces
  auto lo
  iface lo inet loopback
  
  iface enp4s0 inet manual
  
  auto vmbr0
  iface vmbr0 inet static
          address 192.168.0.4
          netmask 255.255.255.0
          gateway 192.168.0.1
          bridge_ports enp4s0
          bridge_stp off
          bridge_fd 0
  root@rubis:~# ip ad
  1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
      inet 127.0.0.1/8 scope host lo
         valid_lft forever preferred_lft forever
      inet6 ::1/128 scope host
         valid_lft forever preferred_lft forever
  2: enp4s0: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
      link/ether bc:5f:f4:38:94:db brd ff:ff:ff:ff:ff:ff
  20: vmbr0: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue state UP group default qlen 1000
      link/ether bc:5f:f4:38:94:db brd ff:ff:ff:ff:ff:ff
      inet 192.168.0.4/24 brd 192.168.0.255 scope global vmbr0
         valid_lft forever preferred_lft forever
      inet6 fe80::be5f:f4ff:fe38:94db/64 scope link
         valid_lft forever preferred_lft forever
  24: veth102i0@if23: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
      link/ether fe:98:ea:d6:da:96 brd ff:ff:ff:ff:ff:ff link-netnsid 0
  26: veth101i0@if25: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
      link/ether fe:80:1e:1c:8c:e3 brd ff:ff:ff:ff:ff:ff link-netnsid 1
  root@rubis:~# brctl show vmbr0
  bridge name     bridge id               STP enabled     interfaces
  vmbr0           8000.bc5ff43894db       no              enp4s0
                                                          veth101i0
                                                          veth102i0
  root@rubis:~# ip route show
  default via 192.168.0.1 dev vmbr0 onlink
  192.168.0.0/24 dev vmbr0 proto kernel scope link src 192.168.0.4
  </code></pre>
  
  <p>I am a noob, I think I break something on the host, please help. Sorry for bad english, I am french.</p>