<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - module-rtp-send floods the network with UDP packets, crippling it severely" href="https://bugs.freedesktop.org/show_bug.cgi?id=44777#c22">Comment # 22</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - module-rtp-send floods the network with UDP packets, crippling it severely" href="https://bugs.freedesktop.org/show_bug.cgi?id=44777">bug 44777</a> from <a class="email" href="mailto:piotr@prokocim.org" title="Piotr Górski <piotr@prokocim.org>"> Piotr Górski</a> <pre>All problems with RTP module flooding network, Wifi are caused by lack of IGMP support in rtp_send module. When pulseaudio with rtp_recv module is started proper IGMPv2 signalling works like it should: root@orangepione:~# tshark -i eth0 -Y "igmp" Capturing on 'eth0' 117 6.950723148 192.168.254.141 -> 239.255.1.56 IGMPv2 46 Membership Report group 239.255.1.56 177 10.430705605 192.168.254.141 -> 239.255.1.56 IGMPv2 46 Membership Report group 239.255.1.56 215 13.660683494 192.168.254.141 -> 239.255.1.56 IGMPv2 46 Membership Report group 239.255.1.56 Pulseaudio creates Multicast group (I don't use default group). As IGMP signalling is OK - IGMP capable switches enable that multicast group only on ports that need it. If pulseaudio is configured with rtp_send module - there is no IGMP signalling. Looking at code of module-rtp-recv.c we can find: mr4.imr_multiaddr = ((const struct sockaddr_in*) sa)->sin_addr; r = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mr4, sizeof(mr4)); IP_ADD_MEMBERSHIP tells kernel to join multicast group. There is no such command is module-rtp-send.c It needs fixing ASAP</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>