Questions tagged [ipv6]
Questions about IPv6, the newest version of the Internet Protocol. This tag should be used when asking about personal/home network IPv6 addressing, or basic IPv6 knowledge. Questions related to company-grade IPv6 networks are off-topic and should be asked on Network engineering SE.
1,340 questions
2
votes
0
answers
48
views
SSH 'No route to host' only within tmux session
I began exploring tmux yesterday, and arrived at a very strange problem: From inside a tmux session, I can SSH into any server and my router – but not into a local server. Connecting from outside a ...
- 571
0
votes
1
answer
63
views
Unable to accessIPv6 sites but IPv4 works OK
BRSK is my ISP, and I read on the Internet that they support IPv6
However, I am unable to load IPv6 Google on my PC. I did a tracert from my PC to Google
Here's what I got
tracing route to ipv6.l....
- 709
3
votes
2
answers
132
views
Why does it seem that IPv6 not working on my Fedora 43 setup?
I am using Fedora 43 with the KDE desktop. Whenever I try to ping something using IPv6, it just times out. I can also rule out my router, since I have another device inside the same network running ...
- 53
0
votes
1
answer
386
views
Access IPv4 sites through IPv6 only server
I have a VPS hosting Wireguard that only has IPv6 addresses.
When I connect from my local machine, I can access google.com in Chrome, which prefers IPv6, but not in Firefox, which prefers IPv4.
Sites ...
Friedrich Swun
1
vote
1
answer
238
views
Network on Linux refuses to get IPv6 address from DHCP and extremely low bandwidth
TL;DR;
Linux (Debian, Debian Testing, Fedora, Ubuntu Server) refuses to obtain the defined IPv6 address but does obtain the correct IPv4
Network extremely slow
All of this was working 100% fine, ...
- 67
0
votes
0
answers
147
views
How do I fine-tune IPv6 functionality on Raspberry Pi Trixie using UFW?
Background: After multiple fresh rebuilds with the new Raspberry Pi Operating System: Trixie, I created a Wireless Access Point to:
Act as a Firewall, and 2) Provide short-range Ethernet (as an ...
- 57
1
vote
1
answer
297
views
How to deal with a ISP who is changing IPv6 prefix every 3 days?
I'm now using a Fortigate 30E as my family gateway, but I get lagging on video websites on my mobile phone often only on WiFi network. After check, I found the IPv6 address on mobile is no reachable ...
- 13
1
vote
2
answers
376
views
Router IPv6 routing to IPv4 (?)
What am I trying to do?
Make my services, which are running on a Linux server, reachable over the internet;
My Linux server is connected to the internet through two 'consecutive' routers;
The problem ...
- 67
1
vote
2
answers
142
views
What is the trigger for Windows to not ignore IPv6 responses in DNS queries? Why is localhost always working?
A clean Windows 11 can't resolve IPv6 for use
> ping 0--1.has-aaaa.name
Ping request could not find host 0--1.has-aaaa.name. Please check the name and try again.
> nslookup 0--1.has-aaaa.name
...
- 206
0
votes
0
answers
46
views
How change default IPv6 hop limit for macOS?
On macOS Sonoma 14.7.8.
I try sysctl -w net.inet6.ip6.hlim=65 or add string net.inet6.ip6.hlim=65 to /etc/sysctl.conf and reboot.
Kernel variable net.inet6.ip6.hlim set to new value 65, but IPv6 Hop ...
- 101
0
votes
1
answer
129
views
NAT6 Adding IPv6 Default Route: Host is unreachable
My ISP provides IPv6 access, but for some reason I have to use NAT6 in my local network.
Tutorials about NAT6(6) mention that it's essential to add a default route to the first hop of traceroute, ...
- 113
0
votes
1
answer
251
views
No IPv6 connectivity after switching to different router
My local server (Ubuntu 24.04) lost all external IPv6 connectivity after I switched to a new router (Asus Zen WiFi → GL.iNet Flint 2 (OpenWrt), both configured for IPv6 passthrough from the ISP's ...
- 571
0
votes
0
answers
182
views
Why am I having IPv6 issues with my home DHCP/DNS server?
I've set up a box to hopefully improve my household's internet experience. It uses a cheap "industrial computer" from Ali* (N2940, 8GB, 80GB) with Alpine Linux on it (no gui, I just ssh into ...
2
votes
1
answer
1k
views
What would I need to do to get WireGuard working in an IPv6-only configuration?
I have configured the following dual-stack WireGuard tunnel:
# Server
[Interface]
Address = 2a01:38cf:4a:98::7:1/112, 10.100.0.1/24
PrivateKey = [redacted]
ListenPort = 51819
PostUp = iptables -A ...
- 571
2
votes
1
answer
127
views
How to fix a name to an IPv6 address?
I have a home network running primarily on IPv4, but I need to predictably (= by name) address some devices via IPv6. IPv6 is enabled everywhere possible, but not used beyond that.
My router (a ...
- 3,999