On Thu 11 Jul 2019 at 16:51:50 +0200, john doe wrote:
> 
> If you can, I would turn off iptables to see if iptables is the culprit.

Ok, I have nftables.service active and stopping it I'm able to ping the host 
from the
guest. So this was the problem. Thank you very much =)

If I remember well, I configured nftables.conf using one of the Debian 
defaults. Since
it's a topic I still have not find the time to study, I'm a little blind on 
what I can
do to fix the configuration...

/etc/nftables.conf::

    #!/usr/sbin/nft -f

    flush ruleset

    table inet filter {
        chain input {
                type filter hook input priority 0;

                # accept any localhost traffic
                iif lo accept

                # accept traffic originated from us
                ct state established,related accept

                # activate the following line to accept common local services
                tcp dport { 22 } ct state new accept
                #tcp dport { 22, 80, 443 } ct state new accept

                # accept neighbour discovery otherwise IPv6 connectivity breaks.
                ip6 nexthdr icmpv6 icmpv6 type { nd-neighbor-solicit,  
nd-router-advert, nd-neighbor-advert } accept

                # count and drop any other traffic
                counter drop
        }
    }


-- 
                                        ~ Sandro ~

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