[PVE-User] Can´t ping to the outside - OVH Proxmox 5.3

[Miguel González]

Hi,

   I am migrating some VMs from a Soyoustart (OVH) Proxmox 5.1 to a
brand new Proxmox 5.3 server (again Soyoustart).

   I have followed the instructions from OVH and Proxmox and I can ping
from the VM to the host and the gateway and I can ping from the host to
the VM. But I can´t ping the DNS server or anything outside the host
machine (i.e.: the legacy Proxmox host).

  Some people suggest to enable ip forwarding, but I don´t have enabled
on the legacy server.

  But I enable it anyway echo 1 > /proc/sys/net/ipv4/ip_forward
  

  and nothing happens.

  iptables seems to be turned off both in host and vm:

   iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination        

So I´m out of ideas here

Any suggestion?

Miguel



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