freebsd stable - Jul 2017 - VirtualBox outbound networking

Hi Mike,

yes, a (correct) default route is added and the guest can reach the VirtualBox
nat-gateway.. oddly enough, the VirtualBox DHCP server seems to have passed the
hosts resolv.conf and is able to dig dns responses with my local-lan dns
resolver, but can't ping it.

When a guest digs to my routers dns service, i can see the packets on the router
coming from hosts IP address, i.e. nat working, but when i try to ping it the
router, i can't see any packets, neither on the host nor on the remote site.
   
   
> On 9. Jul 2017, at 00:33, Mike Karels <mike at karels.net> wrote:
> 
>> That is, e.g. in "NAT" mode VirtualBox' own DHCP server
hands out addresses to guest, which are in turn able to ping the host but
can't get outside their own networks.
> 
>> I'm sorry for not mentioning this in the first post.
> 
> Are you getting a default route from the (virtual) DHCP server?  If not,
> can you add one manually?  I can attest that the route is working with
> 10.3, but probably you have even more recent experience.
> 
> 		Mike

Mea Cupla, i guess.. I can confirm that both, NAT and bridged networking, are
indeed working fine on 11.1-RC1 too. The "problem" appears to be
"only" with ICMP and the way VirtualBox implements NAT, i.e. TCP and
UDP work fine. A post from last month stated bridged networking on 11.1 BETA1
onwards wouldn't work either, that i can confirm is working fine, at least
here and as far as i can see.

Mike, can your vbox guests send ICMP messages beyond their gateway on 10.3 or is
this known behaviour?

Thanks again..

Sydney
> On 9. Jul 2017, at 00:57, Sydney Meyer <meyer.sydney at
googlemail.com> wrote:
> 
> Hi Mike,
> 
> yes, a (correct) default route is added and the guest can reach the
VirtualBox nat-gateway.. oddly enough, the VirtualBox DHCP server seems to have
passed the hosts resolv.conf and is able to dig dns responses with my local-lan
dns resolver, but can't ping it.
> 
> When a guest digs to my routers dns service, i can see the packets on the
router coming from hosts IP address, i.e. nat working, but when i try to ping it
the router, i can't see any packets, neither on the host nor on the remote
site.