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IPv6 Services Were Unavailable Because Temporary IPv6 Addresses Were Used as the Source IP Addresses in Windows 7

Publication Date:  2013-10-30 Views:  36 Downloads:  0
Issue Description

Version: ME60-X8 V600R002C02SPC700+SPC033

OS on terminals: Windows 7

An ME60 connected to an education network. The network had terminals running Windows 7 and used binding authentication to allocate IPv6 address to terminals. A terminal could obtain an IPv6 address but failed to access IPv6 services.

IPv6-related configurations on the ME60 were as follows:

#
 ipv6
#
interface GigabitEthernet1/0/3
 ipv6 enable
 ip address 192.168.250.5 255.255.255.252
 ipv6 address 2001:da8:6005:b00c::2
 ospfv3 1 area 0.0.0.6
 ospfv3 network-type p2p
#
interface GigabitEthernet1/0/2.120
 pppoe-server bind Virtual-Template 0
 ipv6 enable
 ipv6 address auto link-local
 user-vlan 600 652
 bas
 #
  access-type layer2-subscriber default-domain pre-authentication campus-before-auth authentication cer
  authentication-method ppp web
  authentication-method-ipv6 web
  ip-trigger
  arp-trigger
#
ipv6 prefix xnjd-ipv6 local
 prefix 2001:da8:6005:0060::/64
#
ipv6 pool xnjd-ipv6 bas local
 dns-server 2001:DA8:6005:A001::3
 prefix xnjd-ipv6
#
#
aaa
 authentication-scheme ipv6
  authentication-mode none
 accounting-scheme ipv6
  accounting-mode none
#
 domain campus-before-auth
  authentication-scheme ipv6
  accounting-scheme ipv6
  ipv6-pool xnjd-ipv6
  ip-pool campus-before-auth
#
ospfv3 1
 router-id 192.168.250.5
 import-route direct
 import-route static
 import-route unr
#
Handling Process

To address the issue, Huawei performed the following operations and observed the following information:

1. Checked the ME60 and found that the user went online successfully and the ME60 allocated an IPv6 address 2001:da8:6005:43e:520:82e9:b057:9ae7 to the user.

2. Checked the IP address on the terminal. The IPv6 address was 2001:da8:6005:43e:520:82e9:b057:9ae7 and the temporary IPv4 address was 2001:da8:6005:43e:550f:3a5f:85ea:78c0

3. Captured packets when the terminal tried to access IPv6 websites. The source IP address of http packets was the temporary IPv6 address 2001:da8:6005:43e:550f:3a5f:85ea:78c0. ME60 was not configured with routes to the temporary IPv6 address, resulting in a IPv4 service access failure. 
Root Cause
The source IP address of http packets was the temporary IPv6 address 2001:da8:6005:43e:550f:3a5f:85ea:78c0. ME60 was not configured with routes to the temporary IPv6 address, resulting in a IPv4 service access failure.
Solution

Enter DOS mode on the terminal and run the following command to disable temporary IPv6 addresses. 

C:\windows\system32>netsh
netsh>int
netsh interface>ipv6
netsh interface ipv6>set privacy  state = disable

Then reset the network adapter.
Suggestions
None

END