[systemd-devel] Understanding DHCP, DNS and IPMasquerade

[Johannes Ernst]

> On Jun 15, 2015, at 10:33, Lennart Poettering <lennart at poettering.net> wrote:
> 
> On Mon, 15.06.15 10:32, Johannes Ernst (johannes.ernst at gmail.com <mailto:johannes.ernst at gmail.com>) wrote:
> 
>> 
>>> On Jun 14, 2015, at 15:27, Lennart Poettering <lennart at poettering.net> wrote:
>>> 
>>> On Fri, 12.06.15 17:32, Johannes Ernst (johannes.ernst at gmail.com) wrote:
>>> 
>>>> * host and container can ping test (if test is the name of the
>>>> * container machine per machinectl): FAILS, neither can
>>> 
>>> Do you have nss-mymachines enabled in /etc/nsswitch.conf?
>> 
>> Yes:
>> 
>>> Does pinging via the IP addresses work? 
>> 
>> Yes. Both container->host and host->container.
>> 
>> On host:
>>> machinectl
>> MACHINE CLASS     SERVICE
>> foo     container nspawn 
>> 
>> 1 machines listed.
>>> ping foo
>> ping: unknown host foo
>>> cat /etc/nsswitch.conf 
>> hosts: nss-mymachines files mdns_minimal [NOTFOUND=return] dns myhostname
> 
> Does "machinectl status" show the IP addresses of the container in its
> output?

Yes:

> sudo machinectl status foo
           Since: Mon 2015-06-15 17:27:33 UTC; 9min ago
          Leader: 31137 (systemd)
         Service: nspawn; class container
            Root: /home/buildmaster/git/github.com/uboslinux/ubos-buildconfig/repository/dev/x86_64/images/ubos_dev_container-pc_20150614-054626
           Iface: ve-foo
         Address: 10.0.0.2
                  169.254.169.115
              OS: UBOS

(UBOS: for our purposes here: same as Arch)


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