Hi
I am using sipp on a machine with these IPs:
eth0 172.31.196.241eth1 10.10.10.1lo 127.0.0.1
when using sipp to send media, the RTP packets are sent from 127.0.0.1 to 
127.0.0.1 [local loopback to local loopback] 
this is the command I am using:
./sipp 
172.31.196.242 -sn uac_pcap -i 
172.31.196.241 -mi 
172.31.196.241  -d 5000 -l 1 -m 1
the UAS is 172.31.196.242 and the signaling looks fine, however the UAS never 
receives the RTP because stays local (127.0.0.1 -> 127.0.0.1)
After looking for information on similar issues I found a couple of post that 
say that the "mi" parameter works only on the UAS side with the rtp echo 
feature. Also the documentation says this:
[media_ip]      -       Depending on the value of -mi parameter, it is the 
local IP address for RTP echo.
RTP echoThe "RTP echo" feature allows SIPp to listen to one or two local IP 
address and port (specified using -mi and -mp command line parameters) for RTP 
media. Everything that is received on this address/port is echoed back to the 
sender.
How can I specify what interface/ip to use for sending RTP?
txs a lot
fabian

                                          
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