[systemd-devel] starting/stopping network interfaces with systemd

[Cliff Brake]

Hi,

I'm trying to customize systemd to start/stop network interfaces in an
embedded system (OpenEmbedded/Angstrom).  Angstrom has some support
for systemd and its working fairly well so far.  Are there any
examples I can start with?  Basically, when a network device is
installed (USB), I'd like to run "ifup eth0", etc.

this is what I have so far:

[Unit]
Description=Start networking services
After=syslog.target

[Service]
ExecStart=/sbin/ifup eth0
Type=oneshot
ExecStop=/sbin/ifdown eth0
StandardOutput=syslog+console

[Install]
WantedBy=multi-user.target

but its not working:

systemctl start network.service
asix 1-2:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
ifup[756]: udhcpc (v1.18.5) started
ifup[756]: Sending discover...
ifup[756]: Sending select for 192.168.1.100...
ifup[756]: Lease of 192.168.1.100 obtained, lease time 3600
ifup[756]: adding dns 192.168.1.1

This all looks good, but then when I do ifconfig, the network devices
is not configured:

root at cm-x270:/lib/systemd/system# ifconfig
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:268 (268.0 B)  TX bytes:268 (268.0 B)

running ifup eth0 manually works fine.

Beyond this, it would be nice to somehow trigger on when a USB NIC is
installed and automatically run ifup.  Any pointers would be
appreciated.

Thanks,
Cliff

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