[lxc-users] LXD network access on wifi-only host witout bridge adapter

[Jeff Kowalczyk]

On Tue, Sep 13, 2016 at 6:10 PM, Fajar A. Nugraha <list at fajar.net> wrote:

> By default lxdbr0 exists by itself, without the need of any physical network
> adapter as slave.

> So yes, it can be used without eth0 active, assuming that you also some kind
> of dhcp and NAT/proxy active for the containers (which should be enabled by
> default)

I'm running lxd-2.4.1 now, and would like to take another shot at
using the new networking commands to getting basic networking up and
running. I was unable to get a bridged connection up with an inactive
eth0 using lxd-2.1.

The host OS is Gentoo Linux, so I may need to manually recreate
infrastructure handled by package install on Ubuntu. Greatly
appreciated if lxd requisites on the host can be spelled out in detail
so I don't miss a critical item.

Host info:
- Gentoo Linux
- dnsmasq installed w stock config but not running, not listening for
DHCP or NAT on host
- connman daemon manages wlan0 and eth0, only one active at a time in
current config
- wlan0 active with dhcp
- eth0 inactive, configured for dhcp when wired connection available
- Host LAN address 192.168.1.x

Objectives:
- LXD containers internet access out via host as gateway, host IP is via DHCP
- LXD containers on shared network to interact with each other
- Host access to LXD containers, explicit port forwarding is fine if
that would work better with wifi-only host.

Any suggestions on how to achieve this using lxd-2.4.1's new network commands?

% lxc network list
NAME,TYPE,MANAGED,USED BY
eth0,physical,NO,0
wlan0,physical,NO,0

Does LXD 2.4.1 provide/use an internal DHCP server and NAT proxy, or
is dnsmasq or similar required to be configured and running on the
host? I'm accustomed to qemu-kvm and its internal DHCP/NAT. Is LXD
doing something similar?

Any manual routes I need to add?

Thanks,
Jeff