fails to autodetect network interface

[Matthias Kretz]

upnp-control-daemon doesn't work unless I specify -i eth0. Here's the available interfaces to choose from. Shouldn't be that hard to find the right one...

eth0 Link encap:Ethernet HWaddr 58:b0:35:fc:8d:c9
          inet addr:192.168.2.10 Bcast:192.168.2.255 Mask:255.255.255.0
lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
virbr0 Link encap:Ethernet HWaddr 7e:83:25:54:d0:16
          inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0

--debug doesn't report anything about the autodetection process.

[Daniele Napolitano (dnax88)]

The interface autodetection is made by gupnp library.

[Dylan McCall (dylanmccall)]

Similar problem with the interface added by lxc. Here's my ifconfig:

eth0 Link encap:Ethernet HWaddr 1c:6f:65:d5:37:c3
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
          Interrupt:47 Base address:0x2000

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:67332 errors:0 dropped:0 overruns:0 frame:0
          TX packets:67332 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6898398 (6.8 MB) TX bytes:6898398 (6.8 MB)

lxcbr0 Link encap:Ethernet HWaddr 16:3b:9d:55:f5:8b
          inet addr:10.0.3.1 Bcast:10.0.3.255 Mask:255.255.255.0
          inet6 addr: fe80::143b:9dff:fe55:f58b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:199 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B) TX bytes:31201 (31.2 KB)

wlan0 Link encap:Ethernet HWaddr 5c:d9:98:4b:dd:ec
          inet addr:192.168.1.121 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::5ed9:98ff:fe4b:ddec/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:4651246 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5416944 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3202101275 (3.2 GB) TX bytes:2229328153 (2.2 GB)

The lxcbr0 interface is created by the lxc-net service, and as soon as it exists gupnp auto-detects that one instead of wlan0.

[Jens Georg (yg-jensge)]

GUPnP is detecting a network interface that is capable of multicast and usable with IPv4. most of the time this ends up being the last one configured. It's not GUPnP's job to find a network interface that leads to a router.

Probably should switch to use a GUPnPContextManager which reports all network interfaces.