VLC dosnot playthe stream that Wireshark catpures on same PC

[ekvlc]

I am using VLC media player 1.0.5 to receive AV RTP streams from an RTSP Server. However, VLC doesn't seem to receive and play it. Here is full detail -
I have two RTSP servers (A and B) running within the WiFi network.
When I point VLC to server A, it(vlc) receives and plays the streams fine.
However, when I point it to B, it doesn't play at all. I collected wireshark logs and all the packets seem to reach to the PC. It seems, they don't reach to VLC. In both cases, RTSP session establishes correctly and fine.
While above session is active with B, I forced my PC to switch to some random WiFi newtork. During this network transition interval, VLC started playing the AV frames for around 1-3 seconds. Obvisouly, as PC has latched to different network after thiss, VLC wouldn't receive any streams anymore.
I wonder, why in the first place, VLC is not able to receive/play the RTP streams, whereae wireshark shows all the packets coming? AND What is the reason it receives and plays few frames during the transition between WiFi networks? Any insight into this will be greatly appreciated.
Thank you!

[VLC_help]

Multiple NICs can cause issues if you use broadcasting/multicasting.

[ekvlc]

There is only one NIC.
I am perplexed why VLC wouldn't see the packets that wireshark captures on the same machine? The destination address and RTP port number for the payloads show as expected.
When I tune away the PC to another WiFi network, momentarily VLC plays few AV clips (1-2 seconds) until it latches on to the new WiFi network.
Could this be caused due to DRM issue?

Thanks.

[VLC_help]

Could this be caused due to DRM issue?

No. DRM would make whole stream unplayable.

Have you tried any newer VLC versions?

[ekvlc]

I tried latest version of VLC. It doesn't like the DESCRIBE response from the server (written in Java) running on linux. It failes with error "DESCRIBE failed with 0: liveMedia0".
I also used server running on Windows that sends exact same response (as per Wireshark log at the machine runnig VLC player) and VLC player plays the stream fine.

[VLC_help]

RTSP support in VLC isn't perfect, so there might be some issues with it.