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OPNsense Forum

Archive => 21.1 Legacy Series => Topic started by: 134 on June 05, 2021, 07:07:39 AM

Title: Windows 10 still see IPv6 even though IPv6 is disabled on this VLAN
Post by: 134 on June 05, 2021, 07:07:39 AM
My ISP only delegate single /64 subnet to my router, to make SLAAC works i give that whole subnet to VLAN 20 via Track interface. But a Windows 10 PC on VLAN 10 still see its IPv6 addresses, although IPv6 routing isn't working on this VLAN:

(https://i.imgur.com/qpMi884.png)

pfSense has same problem.

Is this normal behavior? I guess router advertisement somehow works on all interface and not only the interface that got IPv6 enabled.
Title: Re: Windows 10 still see IPv6 even though IPv6 is disabled on this VLAN
Post by: Greelan on June 05, 2021, 07:28:58 AM
Your Windows machine is probably seeing traffic from both VLANs. See this post for possible solutions: https://forum.opnsense.org/index.php?topic=22831.msg109885#msg109885
Title: Re: Windows 10 still see IPv6 even though IPv6 is disabled on this VLAN
Post by: Napsterbater on June 05, 2021, 04:22:17 PM
Make sure the Ethernet port the Windows system is plugged into is not set to receive ANY other VLANs tagged.

Ports plugged into VLAN unaware systems/devices SHOULD NOT be set to tag any additional VLANs, they should ONLY have the "native" VLAN untagged.
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