> ping ff02::1 multicast Wasn't this disabled for IPv4 for being a security concern? See the Linux net.ipv4.icmp_echo_ignore_broadcasts sysctl. I wonder if th

> ping ff02::1 multicast Wasn't this disabled for IPv4 for being a security concern? See the Linux net.ipv4.icmp_echo_ignore_broadcasts sysctl. I wonder if this will stay enabled for IPv6.