Adding Additional Static IPv6 Addresses to Windows Server 2012R2

I'm trying to add additional static IPv6 to my Windows 2012R2 server.

Right now, 2605:9f80:100:: /64 has been assigned to me and the network interface has only one IPv6 added to it: 2605:9f80:100::2 . When I ping this IP address, I get a response. I tried adding a few additional ones to test, so chose the next couple of numbers in the sequence 2605:9f80:100::3, 2605:9f80:100::4. But none of these seems to work. I get a "destination host unreachable" response. I've manually added all the usable IPv4 addresses and that works.

I'm able to do this when centos or debian linux is installed on the same machine without issue, so it's specifically an issue relating to windows configuration.

I have also tried letting it auto-configure IPv6, which does get a single working IPv6.

If I set the primary IP to any IPv6 within the subnet, it works.  The issue is I'm not able to add a working additional IPv6 in any scenario.  Only the 1 primary IPv6 will work at a time.


ipconfig / all below:
PS C:\Users\Administrator> ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : WIN-7H26J8SDUD7
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Intel(R) I350 Gigabit Network Connection
   Physical Address. . . . . . . . . : 00-25-90-E2-9E-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2605:9f80:100::2(Preferred)
   IPv6 Address. . . . . . . . . . . : 2605:9f80:100::3(Preferred)
   Link-local IPv6 Address . . . . . : fe80::e02e:aabd:6cdd:c40f%12(Preferred)
   IPv4 Address. . . . . . . . . . . : 162.251.167.242(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.248
   IPv4 Address. . . . . . . . . . . : 162.251.167.243(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.248
   IPv4 Address. . . . . . . . . . . : 162.251.167.244(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.248
   IPv4 Address. . . . . . . . . . . : 162.251.167.245(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.248
   IPv4 Address. . . . . . . . . . . : 162.251.167.246(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.248
   Default Gateway . . . . . . . . . : 2605:9f80:100::1
                                       162.251.167.241
   DHCPv6 IAID . . . . . . . . . . . : 301999504
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-EE-30-95-00-25-90-E2-9E-E0
   DNS Servers . . . . . . . . . . . : 2001:4860:4860::8888
                                       2001:4860:4860::8844
                                       8.8.8.8
                                       4.2.2.2
   NetBIOS over Tcpip. . . . . . . . : Enabled

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unrealized92Asked:
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gheistCommented:
My Linux dynamically acquires more and more IPs as I browse the web...
I think DHCP supports one address only.
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unrealized92Author Commented:
gheist,

What do you mean? I'm trying to statically assign IPv6 addresses.  NOT using DHCP.
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gheistCommented:
I think you need to disable DHCPv6 to get static IPs
0
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unrealized92Author Commented:
gheist,

How would you recommend doing that?
0
Cliff GaliherCommented:
You definitely have something unique in your environment throwing things off. Either router advertisements, non-standard configurations, or similar.  I have several public IPv6 infrastructure deployments and just tried to reproduce this on my secured lab as well and none have exhibited the behavior you describe.  The error about the host being unreachable specifically would indicate a routing issue.  I'd be inclined to look at your routing table on the windows machine with the issue (route print) and see if anything stands out. I may also consider wireshark for looking at IPv6 discovery methods that could be throwing things off.
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Seth SimmonsSr. Systems AdministratorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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