Description of problem: Multicasting to the IPv6 node-local multicast address ff01::1 causes multicast packets to be transmitted across node boundaries. Version-Release number of selected component (if applicable): Linux localhost.localdomain 2.6.26.8-57.fc8 #1 SMP Thu Dec 18 19:19:45 EST 2008 i686 i686 i386 GNU/Linux How reproducible: Always. Steps to Reproduce: I'm using the IPv6 multicast utilities associated with and attached to Bug 231899. On a two host LAN with hosts A and B: 1. run ./mcreceive6 ff01::1:2:3 1444 eth0 on host A 2. run ./mcsend6 ff01::1:2:3 1444 on host B 3. type in some characters and press enter at the prompt on Host B Actual results: Multicast packets with destination ff01::1:2:3 arrive at host A. Expected results: Multicast packets with destination ff01::1:2:3 do not leave host B Additional info: With wireshark enabled, I see very different sets of messages exchanged when multicasting to ff02:: and ff01:: - ff02:: scoped multicasting generates ICMPv6 Multicast Listener Reports on join and leave, whereas ff01:: scoped multicasts do not.
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