Hi all,
The situation is the following:
- Dualstack Windows Server 2012 (SRV01) with DHCP role configured in VLAN 10.
- Dualstack Windows 10 (LAP01) configured in VLAN 20
- Cisco router (RT01) intervlan routing VLANS IPv4 and IPv6
SRV01 (VLAN 10):
10.21.100.97 /27
FC00::2/64
DHCP scope:
Range: FC03::
Exclusion: FC03::1
LAP01 (VLAN 20):
10.21.100.65 /27
FC03::30/63
RT01:
DG VLAN 10/20 IPv4/IPv6
It works perfect when IPv4 and IPv6 are statically configured, just as DHCP IPv4 (ip helper-address). Now, I'd like DHCPv6 to lease an IPv6 address to my Windows 10 cliënt (LAP01). That's what the problem is. The server can receive (if it's relevant) DHCPv6 from its own, so the DHCP role is configured properly.
When I monitor the LAP01 NIC with Wireshark, I can verify that LAP01 receives an DHCPv6 advertisement. If I run ipconfig /all, I can also verify that LAP01 receives the DHCPv6 information.
If it's useful, this is my relevant RT01 configuration:
- Version 15.5
- ipv6 unicast routing
- interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ipv6 address FC00::1/64
ipv6 enable
- interface GigabitEthernet0/0.20
encapsulation dot1Q 20
ipv6 address FC03::1/64
ipv6 enable
ipv6 nd managed-config-flag
ipv6 dhcp relay destination FC00::2
If it helps, I've also added a screenshot of Wireshark when requesting for DHCPv6.
Things I tried:
- Disable IPv4 when requesting IPv6
- IPconfig /renew6
- Disable/enable LAN adapter
- LAP01 in same VLAN as SRV01
- etc..
Hopefully someone can help me out! Suggestions are welcome and if more information is requested, feel free to ask!
Kind regards,
Tom
