fe80::1 ff02::1 ICMPv6 Router Advertisement 7 0.000133 ff02::1:ff58:3822 ICMPv6 Neighbor Solicitation for 2001:6e8:2 8 0.064194 fe80::aa:8off:fe58:3822 ff02::2 ICMPv6 Multicast Listener Done 9 0.000073 fe80::aa:8off:fe58:3822 ff02::fb ICMPv6 Multicast Listener Report 10 2.026768 fe80::aa:8off:fe58:3822 ff02::fb ICMPv6 Multicast Listener Report 11 2.406777 2001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 12 1.688801 2001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr 13 1.000096 2001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr 14 2.000215 001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr 15 1.000051 2001:6e8:2100:190:aa:8off:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr 16 1.000148 2001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr 17 2.000317 2001:6e8:2100:190:aa:80ff:fe58:3822 ff02::1:ff00:1 ICMPv6 Neighbor Solicitation for fe80::1 fr ....... D Frame 11: 86 bytes on wire (688 bits). 86 bytes captured (688 bits) D Ethernet II, Src: 02:aa:80:58:38:22 (02:aa:80:58:38:22). Dst: IPv6mcast_ff:00:00:03 33:ff:00:00:01 Internet Protocol Version 6, Src: 2001:6e8:2100:190:aa:80ff:fe58:3822 (2001:6e8:2100:190:aa:80ff:fe58:3822), Dst ff02 Internet Control Message Protocol v6 Type: Neighbor Solicitation (135) Code: 0 Checksum: 0xbe59 [correct) Reserved: 00000000 Target Address: fe80::1 (fe80::1) D ICMPV6 Option (Source Link -layer address 02:aa Figure 4.31 Example of NDP failure on a 3G link, which blocks all user initiated IPv6 traffic. IPv6 in 3GPP Networks interface. In other words, if they emulate IEEE 802 interfaces, they also need to process NDP messages correctly. Duplicate Address Detection Failing As we have already learned a PGW tells a UE the IID it is mandated to use to configure its link-local address. However, again due to misbehaving end host driver implementations or for 