How to receive udp streams on multiple interfaces

[ge_keep]

Hi,

I have a 2 nodes network with each node having 2 network interfaces eth0 and
eth1.

I have following interfaces coonection: eth0 of node1 connected to eth0 of
node2 and eth1 of node1 connected to eth1 of node2.

If I am sending a udp stream from Node1 and I want to set Node2 to listen on
all its interfaces (eth0 and eth1) at the same time.

On Node 2(Client (receiver)) i run following command and I am not getting
any audio. I know node1 is sending data on defalut interface which in this
case is eth0.
gst-launch-1.0 udpsrc* multicast-iface="eth0" multicast-iface="eth1"
*port=3535 ! rtppcmadepay ! alawdec ! audioconvert ! audioresample !
alsasink 

Looks like the udp client cannot take multiple time property setting of
multicast-iface. if I define only one interface in this command (such as
eht0 only), then i have audio.

*Question1:
Is there a way to define a "wild card" interface on the receiver to allow
him to listen on all its available interfaces?* 

Question2:
I am also looking to know how to send a single udp stream on both interface
(eth0 and eth1) at the time, from Node 1 for example:
is following command also allowed?
gst-launch-1.0 filesrc location=test.wav ! wavparse ! audioconvert !
audioresample ! alawenc ! rtppcmapay ! udpsink *multicast-iface="eth0"
multicast-iface="eth1*" host=124.1.0.0 port=3535

Or Is gstreamer sockets implementation is limited to support such use cases?
in that sense, am I force to run two different gst-launch commands on the
receiver node, one for each multicast-iface?



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