IPv6 help

[howartp]

Hello.

 

I provide IT oversight for my local village community centre.

 

CCTV, Paxton and a Dell miniPC are wired, staff & guest WiFI inc the bar tills are wifi. Router is Icotera from BRSK ISP.

 

We've got a problem whereby iOS devices work absolutely fine on the wifi but Windows tablets/laptops and the Dell PC will not browse anything.

 

Googling last night, I found this post (https://forum.netgate.com/topic/143345/potential-dns-issue-on-windows-10-pc-s/6) which i'm confident is the issue, manifesting differently due to their custom pfSense setups.

 

If I run "nslookup www.bbc.co.uk" I get a response from an IPv6 server with result 198.18.1.1 - which is a private address scheme similar to 169.254.*.*

If I run "nslookup http://www.bbc.co.uk 8.8.8.8" I get a normal set of BBC IPs.

 

If I go on my laptop to Network Connections > Local Area Network 1 > Properties, and untick the IPv6 entry, browsing starts working on my laptop, which confirms it is related to IPv6.

 

The problem is, I know two things about IPv6, neither of which help me:

 

1) It's bigger than IPv4.

2) It has colons instead of dots.

 

Can anyone guide me where to start looking / what piece of IPv6 knowledge I need to learn and understand to know what's going on here?

 

TIA!

 

Peter

Edited December 20, 2024 by howartp

[JRA]

I might be asking the dumbest thing in the world but can you leave ipv6 off in that case?

[howartp]

I might be asking the dumbest thing in the world but can you leave ipv6 off in that case?

I can on the Dell PC as that's in-house, but we hire the rooms out for meetings and events so need any $guestDevice to work on the wifi out of the box.

[Fazza]

What I would do is leave it on, on any Servers you have but turn if off on your clients.

[Michael]

From the sounds of things, it should just be a case of disabling IPv6 in DHCP Server. No requirement to run round clients.

[JRA]

From the sounds of things, it should just be a case of disabling IPv6 in DHCP Server. No requirement to run round clients.

I meant this. Should work I'd think. Unless anything is DYING for an ipv6 address but I can't think on the face of it that'd break anything.

[Michael]

It should be OK, even if the router has a public IPv6 address as is becoming more common.