It turns out there are two problems. (1) You must manually assign a public IPv6 address to at least one of your router's interfaces. This is because when sending an IPv6 packet, the kernel chooses a source address by looking at the addresses of all interfaces. If none of them has a public address, it chooses some link local address as the source address, and of course that's never going to work. To do this, add an IPV6ADDR=... entry to /etc/sysconfig/network-scripts/ifcfg-<some_interface> That should be enough to get ping working. (2) Firewalld filters all forwarded IPv6 packets. This appears to be a massive bug, or at least it's a completely undocumented limitation. https://bugzilla.redhat.com/show_bug.cgi?id=929426 The workaround can be found in that bug. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
