machines: machine: add support for adding vde-backed network interfaces#47
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This enables us to have specific machines join some network in addition to the "QEMU user networking" based default network. It relies on vde because that allows us to join networks without e.g. having to do bridge configuration and creating tun/tap devices (as root). Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
…aces The virtual machines can no longer share the same MAC address when the are connected to the same layer 2 network. Implement random generation of MAC addresses for extra network interfaces. This does not affect the main network interface, which uses QEMU user network emulation. Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
The MAC addresses we use only have to be unique at that specific point in time. When assigning a random MAC to every VM we can easily cause (temporary) exhaustion of available IPv4 addresses from a DHCP server, since the leases need time to expire. Reuse MAC addresses so that DHCP servers can give out the same IP to different VMs (as long as they are not running at the same time). Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
Setting up stable rust is easy. Let's not pretend that it is not. Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
We now have our first set of tests thanks to the MAC address generation. Signed-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
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Hi @jluebbe, could you have a look at this PR as well? We are currently using it in production on our runner. |
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This enables us to have specific machines join some network in addition to the "QEMU user networking" based default network.
It relies on vde because that allows us to join networks without e.g. having to do bridge configuration and creating tun/tap devices (as root).
Todo before merging: