On Tue, Dec 09, 2008 at 10:55:39AM +0000, Mark McLoughlin wrote:
Hi,
Here's a small patch set which adds link up/down
emulation to e1000 via a "set_link" monitor command. This is
useful for people who want to e.g. test how applications
and/or the guest OS handles this condition.
It sounds like it could also be useful for people who use bridging of
guests to the LAN on mobile devices. eg, a management tool could
monitor for when I unplugged my laptop from the ethernet and set the
guest link down. When I then plug it back it, it'd set the link back
up, and the guest (if using NetworkManager or equivalent) would be
able to correctly DHCP a new address. In current scenario with the
guest totally unaware of host link sstatus, they just continue using
the original bogus DHCP address at least until the renew time.
Daniel