IPv4 and IPv6 SLAAC are supported via dual-stack bearers. IP addresses can be provisioned during authentication or through Local Address Assignment. Any DNS (IPv4 and IPv6) and NBNS (IPv4 only) addresses are signaled in the PCO IE. An unsolicited RA is sent after the first Modify Bearer Request message is received. An RS-triggered RA is also supported and either RA can be configured to contain DNS servers. Stateless DHCPv6 can also be used to retrieve the DNS configuration.