Router Info: Netgear WNR3500L v2 Firmware: Tomato Firmware 1.28.0000 MIPSR2-110 K26 USB AIO Mod: shibby v104, v106, v108, v110 I have been dealing with a "long boot" type issue where it can take 5+ minutes for the router to boot. The router appears to reboot several times during a normal start cycle. Initially, I was thinking it was related to the Core USB issue that others have reported in other threads, but I may have found another culprit....IPV6 related I have Comcast HSI and I recently focused my attention on getting IPV6 connectivity. All indications are that it is enabled in my area. Today while working through some of the suggested fixes with getting IPV6 prefix delegation working, I was running a tcpdump session on the router looking specifically at ip6 traffic, as soon as I received a dhcp6 response, I immediately lost my connection and the router rebooted: Code: 18:12:34.151365 IP6 fe80::201:5cff:fe53:e41 > ff02::1:fff6:8735: ICMP6, neighbor solicitation, who has fe80::21e:6bff:fef6:8735, length 32 18:12:34.858553 IP6 fe80::861b:5eff:fee6:92c9.546 > ff02::1:2.547: dhcp6 solicit 18:12:34.876808 IP6 fe80::201:5cff:fe53:e41.547 > fe80::861b:5eff:fee6:92c9.546: dhcp6 advertise 18:12:34.878121 IP6 fe80::861b:5eff:fee6:92c9.546 > ff02::1:2.547: dhcp6 request 18:12:34.892237 IP6 fe80::201:5cff:fe53:e41 > ff02::1:ff19:4d81: ICMP6, neighbor solicitation, who has 2001:558:4011:8a:215:a4ff:fe19:4d81, length 32 18:12:34.903245 IP6 fe80::201:5cff:fe53:e41.547 > fe80::861b:5eff:fee6:92c9.546: dhcp6 reply I do not get an IPV6 delegation when my router boots normally. Is it possible my router is rebooting in rapid succession and Comcast's DHCPv6 server finally stops delegating addresses to me due to my repeated requests which leads my router to boot normally after several minutes?