You are called to assist in troubleshooting a network problem that has occurred soon after a significant IPv6 implementation.

Some network hosts seem to have network access, but their browsers do not resolve URLs that are entered. The network technicians troubleshooting the problem have discovered that the hosts in question can ping other network hosts on a different network segment, but only via IPv6 addresses. Hosts on the other network segment can resolve URLs entered into their browsers. As a note, all network hosts derive their IPv6 addresses using stateful address autoconfig.

What could be the possible issue or issues? And what Wireshark display filter could you use to quickly determine the network problem?