Details:
VirtualBox v5.2.6 r120293
Host: Windows 10 (laptop, wired Ethernet)
Physical NIC: Intel I219-LM
Network Mode: Bridged Adapter
Guest: Xubuntu 16.04.4 LTS
I've been struggling with this issue for some time, back several versions of VB, one major release of Guest OS, and even back one hardware refresh. I've checked everything on the Linux side, and conclude the issue must be with VirtualBox.
Rebooting the guest restores network connectivity, of course, but I eventually found a tip that gets me back on the network without rebooting: switch the network mode from Bridged to NAT, and then back to Bridged.
There is nothing telling in the logs on the guest. The network just stops working. It's not a DHCP renewal issue, as far as I can tell. Here's the latest example:
Code: Select all
syslog:
Mar 9 15:49:26 pc-x dhclient[536]: DHCPREQUEST of 10.0.0.147 on eth0 to 10.0.0.1 port 67 (xid=0x407a10a1)
Mar 9 15:49:26 pc-x dhclient[536]: DHCPACK of 10.0.0.147 from 10.0.0.1
Mar 9 15:49:26 pc-x root: /etc/dhcp/dhclient-enter-hooks.d/avahi-autoipd returned non-zero exit status 1
Mar 9 15:49:26 pc-x root: /etc/dhcp/dhclient-enter-hooks.d/samba returned non-zero exit status 1
Mar 9 15:49:26 pc-x dhclient[536]: bound to 10.0.0.147 -- renewal in 259831 seconds.
...
Mar 10 04:54:44 pc-x whoopsie[1067]: [04:54:44] Cannot reach: https://daisy.ubuntu.com
Mar 10 04:55:24 pc-x whoopsie[1067]: [04:55:24] Cannot reach: https://daisy.ubuntu.com
Mar 10 04:56:36 pc-x whoopsie[1067]: [04:56:36] Cannot reach: https://daisy.ubuntu.com
Mar 10 04:57:16 pc-x whoopsie[1067]: [04:57:16] Cannot reach: https://daisy.ubuntu.com
Appreciate any ideas, insight into the cause, or even better a solution. Thanks!