This bug is still present in Fedora 23 x86_64 and pulseaudio-7.1-1 My machine was sending ~ 180KB/s to 224.0.0.56 until I unchecked "Enable Multicast/RTP sender" in paprefs.
For peace of mind, I ended up adding "unload-module module-rtp-send source=rtp.monitor" into /etc/pulse/default.pa -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/411688 Title: pulseaudio floods network with multicast packets To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/411688/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs