The IPv6 snooping functionality in the first-hop security subsystem in Cisco IOS 12.2, 15.0, 15.1, 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.2SE, 3.3SE, 3.3XO, 3.4SG, 3.5E, and 3.6E prior to 3.6.3E; 3.7E prior to 3.7.2E; 3.9S and 3.10S prior to 3.10.6S; 3.11S prior to 3.11.4S; 3.12... The IPv6 snooping functionality in the first-hop security subsystem in Cisco IOS 12.2, 15.0, 15.1, 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.2SE, 3.3SE, 3.3XO, 3.4SG, 3.5E, and 3.6E prior to 3.6.3E; 3.7E prior to 3.7.2E; 3.9S and 3.10S prior to 3.10.6S; 3.11S prior to 3.11.4S; 3.12...