Can't start if interface have description setted with quagga.

[k0ste]

This is not issue of igmpproxy, but I think this exception can be avoid instead exit.

With iproute administrator can attach description to ip interface, like on bare-metal router or switch. This is called 'label' on iproute terminology. Can be assigned like this:

ip address add 10.10.10.10/24 brd 10.10.10.255 label eth0:igmp dev eth0

Label format is 'device:string'. If not device before separator, returned error:

sudo ip a add 10.10.10.10/24 brd 10.10.10.255 label eth:igmp dev eth0

"dev" (eth0) must match "label" (eth:igmp).

But, if interfaces added via quagga:

!
interface lo
 description Loopback0
 link-detect
 ip address 172.16.255.5/32 label Router_ospf
 ip address 172.16.249.1/32 label ospf_R1
!

This is look like this

ip address show dev lo

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 172.16.255.5/32 scope global Router_ospf
       valid_lft forever preferred_lft forever
    inet 172.16.249.1/32 scope global ospf_R1
       valid_lft forever preferred_lft forever

And we can't start igmpproxy with this fully working interface.

ioctl SIOCGIFNETMASK for Router_ospf; Errno(19): No such device

[ViToni]

This might be related the enumaration of the interfaces you have. igmpproxy is currently still using ioctl, getifaddrs() might help here See https://github.com/ViToni/igmpproxy/commit/6ff5d0cc21fba94a5ac53609e66c07f5b24bbdf1