[SR-Users] RTPEngine - No support for kernel packet forwarding available

[Muhammad Shahzad]

Hi,

I have latest stable release of RTPEngine deployed in a virtual machine
(KVM) along with Kamailio v4.2. All is working fine except i see this
message in RTPEngine logs,

--
rtpengine[16455]: [82qrjq0hdtt45afbqo98 port 40960] Kernelizing media
stream
rtpengine[16455]: [82qrjq0hdtt45afbqo98 port 40960] No support for kernel
packet forwarding available
--

using lsmod command i see that module xt_RTPENGINE is load.

--
Module                  Size  Used by
iptable_mangle         12488  0
xt_RTPENGINE           22068  3
iptable_nat            12800  0
nf_nat                 17924  1 iptable_nat
...
--

Also the iptables rule for RTPEngine exists, i.e.

--
Chain INPUT (policy ACCEPT 224K packets, 37M bytes)
 pkts bytes target     prot opt in     out     source
destination
 224K   37M rtpengine  all  --  any    any     anywhere
anywhere

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source
destination

Chain OUTPUT (policy ACCEPT 224K packets, 37M bytes)
 pkts bytes target     prot opt in     out     source
destination

Chain rtpengine (1 references)
 pkts bytes target     prot opt in     out     source
destination
 2022  414K RTPENGINE  udp  --  any    any     anywhere
anywhere             RTPENGINE id:0
--

Yet still RTPEngine is not able to kernelize the RTP stream and does
user-space packet forwarding? Can you guys suggest what could be wrong here?

Thank you.
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