It looks like something changed in -CURRENT to break network
connectivity to VirtualBox guests. This was last known to work with
r299139 (May 6th) and is definitely broken with r301229. The VirtualBox
port revisions are:
virtualbox-ose-4.3.38_1
virtualbox-ose-kmod-4.3.38
It looks like there was one change to the VirtualBox on May 9th, but it
looks unlikely to be the cause of the problem.
The network settings are:
Attached to: Bridged Adapter
Name: re0
Adapter Type: Paravirtualized Network (virtio-net)
Promiscuous Mode: Deny
MAC Address: [snip]
Ifconfig says that the interface is up, but I am unable to ping either
the host or anything else on the LAN from the guest. It looks like the
problem is with outbound traffic. If I attempt to ping the guest, the
source IP address and MAC address show up in the guest's arp table, but
ping reports:
ping: sendto: Host is down
That makes me think that the arp responses from the guest are not
getting transmitted. None of the machines involved are running
firewalls. If I ping from the guest, I don't see any arp requests on
the wire and the arp command shows the table entry as incomplete.
The problem shows up with both FreeBSD -CURRENT and Debian guests.
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