Help-Windows 7 PC fails to use DHCPv6

Author	All Replies
janderso1 Jim Premium,MVM join:2000-04-15 Saint Petersburg, FL 2 edits	Help-Windows 7 PC fails to use DHCPv6 I have a notebook PC that uses auto configuration instead of DHPv6. The problem with this is it doesn’t get the IPv6 name servers. Other Windows 7 PCs on the same subnet use DHCPv6 so I believe the router (DHCPv6 server) is configured correctly. I am using a /64 subnet of the /48 tunnel assigned to me by Hurricane Electric. My router is a Zyxel USG 50 which handles the tunnel and is the DHCPv6 server. The IPv6 address it uses is within the /64 so it is getting it from my DHCPv6 server/router. C:\Users\janderso>netsh int ipv6 show int 14 Interface Wireless Network Connection Parameters ---------------------------------------------- IfLuid : wireless_0 IfIndex : 14 State : connected Metric : 25 Link MTU : 1480 bytes Reachable Time : 33500 ms Base Reachable Time : 30000 ms Retransmission Interval : 1000 ms DAD Transmits : 1 Site Prefix Length : 64 Site Id : 1 Forwarding : disabled Advertising : disabled Neighbor Discovery : enabled Neighbor Unreachability Detection : enabled Router Discovery : enabled Managed Address Configuration : enabled Other Stateful Configuration : enabled Weak Host Sends : disabled Weak Host Receives : disabled Use Automatic Metric : enabled Ignore Default Routes : disabled Advertised Router Lifetime : 1800 seconds Advertise Default Route : disabled Current Hop Limit : 64 Force ARPND Wake up patterns : disabled Directed MAC Wake up patterns : disabled Link-local IPv6 Address . . . . . : fe80::a09e:8e1d:2703:62e7%14(Preferred) IPv4 Address. . . . . . . . . . . : xx.yy.zz.211(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : fe80::ca6c:87ff:fe36:f82e%14 xx.yy.zz.1 DHCPv6 IAID . . . . . . . . . . . : 357362498 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-70-0C-67-84-8F-69-CD-AD-18 DNS Servers . . . . . . . . . . . : 65.32.5.111 65.32.5.112 xx.yy.zz.1 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{5B7EF111-0565-43A3-A08E-D527966C82AE}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yesipconfig /all C:\Users\janderso>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : NB3 Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 1030 Physical Address. . . . . . . . . : 4C-EB-42-40-D5-0D DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv6 Address. . . . . . . . . . . : 2001:xxxx:yyyy:2:a09e:8e1d:2703:62e7(Prefe rred) Temporary IPv6 Address. . . . . . : 2001:xxxx:yyyy:2:19ff:ecd9:6b1d:17a4(Prefe rred) -- Jim Anderson
	to forum · permalink · 2013-04-04 01:57:43 ·
janderso1 Jim Premium,MVM join:2000-04-15 Saint Petersburg, FL	How do you change the Windows 7 DHCPv6 timeout? It now looks like DHCPv6 timeout problem. Either my router takes longer to respond to a DHCPv6 request or Windows 7 has a shorter timeout for DHCPv6 vs. DHCP (v4). I have two wireless access points configured as access point plus repeater (WDS) for better wireless coverage. The first access point has a gigabit wired connection to the router. The second access point connects wirelessly to the first. The PC that wasn’t using DHCPv6 was wirelessly connected with the second access point. Apparently the two wireless hops add too much delay and Windows 7 uses auto configuration. My hopefully temporary work around is to power down the second access point. This caused the problem PC to connect wirelessly to the first access point and it was able to get its IPv6 address and name servers via DHCPv6. -- Jim Anderson
	to forum · permalink · 2013-04-06 10:29:06 ·

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