Questions tagged [ipv6]
Version 6 of the internet protocol, which will replace version 4.
386
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How to use local-link ipv6 for ssh?
I am able to remotely access my Ubuntu 22.04 PC from my windows' notebook at my local network using ssh
ssh <username>@<public ipv6 address> -p <port>
Or ping it without no problem.
...
- 177
0
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0
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59
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How to effectively to set a global static ipv6 by `addr-gen-mode=eui64`?
I see there are a lot of questions about static ipv6, and privacy (like here, here, here, here and here), and I believe I have tried most of the available solutions (or at least those I was able to ...
- 177
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2
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Why can't I ping over IPv6?
I can browse normally, I can create this question for example, apt update works fine, but when I was trying to install firebase using npm, I received a time out (npm ERR! network request to http://...
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33
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How can I enable IPv6 when microk8s is already installed?
I’ve read this article about enabling IPv6 on microk8s (which is a snap-package), but the documentation only talks about how to apply the configuration before you install microk8s; I installed it ...
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30
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IPv6 routing issues with Vodafone CZ modem
IPv6 used to work for me but something must have changed either in Ubuntu/Xubuntu or in the ISP (Vodafone CZ) modem about two months ago.
When I set the Network Manager UI to "Automatic", it ...
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1
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111
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Ipv6 vs Ipv4: is there a way to force ipv6 use?
Ubuntu/Linux beginner here, so I was wondering if there's any way to force Ubuntu to prefer IPv4 or IPv6 when resolving a name (ex.: google.com has ipv4 and ipv6 addresses. is there any setting which ...
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78
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Problems enabling IPv6
I have two Ubuntu Servers on my home network: one acting as a router/gateway (Router), and the other acting as a media/multipurpose server (Server). I've been trying to enable IPv6 on both, but I'm ...
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1
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305
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Ping ipv6 localhost fails address family for hostname not supported
A year or so ago I tweaked my IPV6 config to disable it, or at last that's what I tough. I don't remember which commands executed or which articles I read. Currently I'm at LM Cinnamon 21.2 (Ubuntu 22....
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Ubuntu 20.04.2 LTS lost internet connectoin out of sudden
My PC is connected to a router. The router has been working all the time and had internet connection. Several days ago I noticed that I suddenly cannot connect to my PC through the router admin page ...
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How can i ssh from one ubuntu machine to another with a cable (no router) and communicate over ipv6, without configuring anything?
What are the minimal steps necessary to do ssh and rsync over ipv6 between two ubuntu machines connected only by an rj45 (cat 5 or cat6) ethernet cable? (So no router nor even a switch is involved, ...
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netplan - trouble converting gateway6 to "to/via" directive
I'm attempting to update my netplan config to use a routes directive instead of gateway6 since gateway6 is deprecated.
My working configuration file looks like this:
# /etc/netplan/51-cloud-init-ipv6....
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0
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1
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33
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Turn off IPv6 resolution for particular URL only
I'm having an issue with registry.npmjs.org -- When I attempt to access it through the command line (e.g. implicitly by using the npm command, or when doing a ping registry.npmjs.org), the access ...
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1
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118
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Terminal has network (DNS?) issues but browser works fine. ipv6 issue?
EDIT: It seems it might be a cable modem issue: according to https://test-ipv6.com/ ipv6 is not working both in Ubuntu as well as windows (dual boot, same workstation), and neither on my smartphone ...
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69
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Ping6 link-local address with -I interface is throwing warning source address might be selected on device other than
OS: Ubuntu 20.04.5 LTS
Ping6 to a link-local address with -I option throwing a warning source address might be selected on device other than <>.
Can someone tell why would ping6 look for a ...
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194
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systemd-networkd does not send IPv6 route advertisement (send_ra) when using VLANS
I am using systemd-networkd for network configuration and the problem I am seeing is that ICMPv6 RA (Route advertisements) are not being sent on the physical (untagged) LAN interface (eno1), while it ...
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Why am I getting a 128 IPv6 prefix when connecting my Ubuntu computer to the uplink?
I have a fiber internet connection with a media adapter, when my routers are connected (one at a time), they each get a 64 prefix, but when my computer is connected, it's getting a 128.
I looked in ...
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115
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Ubuntu 22.04LTS - Wifi issue low network speed because of IPv6
I upgrade from Ubuntu 20.04 to 22.04LTS. I noticed that my wifi speed slowed down from 40 Mbps to 1 Mbps(max) after one hour. Again, if I reboot then it worked fine.
After trying multiple suggestions ...
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IPv6 "Activation of network connecting failed" [WiFi] and many urls unreachable (incl snap)
The first thing I noticed was that snap could not connect (running release 22.10):
Failed to find refreshable snaps: status-code=500 kind=(null) message=cannot list updates: persistent network error: ...
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196
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Why doesn't systemd-networkd assign me an IPv6 address from my assigned prefix?
I am using an 22.04 server instance as a router for my home network. I have working IPv4 & IPv6 service, but my public IPv6 address is assigned to my LAN interface, which is unexpected to me. My ...
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2
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132
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IPv6 source address selection with addrlabel and netplan
I have configured my Ubuntu 22.04 via netplan like this:
network:
version: 2
renderer: networkd
ethernets:
enp3s0:
addresses:
- 192.168.10.10/24
- 2001:db8:6789::10/64
...
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0
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60
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What overrides IPV6ACCEPTRA/RouteMetric= defaults?
I run a fresh install of Ubuntu 22.04.1 Server to which I added:
avahi-daemon
docker-ce docker-ce-cli containerd.io docker-compose-plugin
According to the documentation, the default RA metric is ...
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2
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0
answers
255
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IPv6 issues Ubuntu 20.04 server
I have a server running the following software:
Ubuntu 20.04
cPanel 106.0.13
PHP 8.1
MySQL 8
Litespeed Web Server
Elasticsearch 7.17
Redis 7
I am running a magento 2.4.5 store on this server which ...
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182
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Trying to use a tunnel from HE but some IPv6 connectivity is broken
I have a server from Kimsufi (OVH Eco branch) but unfortunatelly they only provide a /128 IPv6 block.
So, I decided to use a Hurricane Electric (HE) tunnel to have a /64 IPv6 block.
I've followed HE ...
2
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3
answers
657
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Route all traffic on port 443 (IPv4), to an external IP address on port 80 (IPv6)
I want to host a website from home using the Yggdrasil network. Yggdrasil gives me a static IPv6 address at home (even if behind a DNS). However "regular" users cannot be routed to that IP ...
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0
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0
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436
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Can't ping local IPv6 on Ubuntu 22.04.1 LTS with Netplan
I have truly bizarre issue. I setup my network on VPS, according to guide, with Netplan. Everything works fine for internet connection, but I can't seems to be able to ping local IPv6, IPv4 works as ...
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1
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127
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How to find out the program from iptables log
Testing the ping on ubuntu 22.04:
Host A IPv6: 1111:1111:1111:1111:1111:1111:1111:1111
Host B IPv6: 2222:2222:2222:2222:2222:2222:2222:2222
Host A:
Now execute a ping from Host A with the following ...
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SLAAC suddenly enabled in Jammy with kernel 5.15.0-56-generic #62-Ubuntu
Last night, my Ubuntu-based VPS updated itself to Linux smtp 5.15.0-56-generic #62-Ubuntu SMP Tue Nov 22 19:54:14 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux and since then, SLAAC seems to be ...
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232
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Cannot SSH using IPv6 address until I ping it with the correct address
I'm having a weird problem when trying to SSH into a wireless SBC running Armbian (Ubuntu 22.04.01 LTS).
When I try to SSH using the FQDN it doesn't respond:
vmplayer@vm-play:~$ ssh -l potato potato-...
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1
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1
answer
3k
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IPv6 network on Ubuntu Server 22.04
Can't seem to get the IPv6 network to work.
Unfortunately, I decided to reinstall the system anyway. And IPv6 doesn't work for me either.
Given: Dedicated IPv4 like: 45.80.XX.XX/32 and gateway 10.0.0....
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1
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1
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273
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Why is Ubuntu 20.04 lts not using the random ipv6 address?
I have a dualstack Internet connection.
In Windows I get ipv6 address from my local DHCPv6 server and 2 other random ipv6 addresses. Wen i check online what ipv6 address windows is using to connect to ...
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1
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0
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137
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A strange problem about IPv6 TCP connection
I have a really weird problem. In short, everything works fine with IPv4, ICMP & UDP for IPv6 is also fine, however, TCP for IPv6 can only "listen", but cannot establish a connection ...
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113
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Why IPv6 looks disabled by default in Multicast DNS resolution?
I was trying to transfer data between my two machines using Avahi's .local name. The network was configured to use only IPv6 on both machines and names were not resolved. Initially I thought it was a ...
0
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1
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239
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Systemd-networkd and IPv6Token in 20.04
I've been recently playing with IPv6 but I have a vexing problem with my
little Ubuntu box. Systemd-networkd (from systemd 245.4) is supposed to
understand a directive like this:
IPv6Token=...
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0
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1
answer
418
views
How can I set up my Ubuntu sever as ipv6 tunnel?
I have an Ubuntu server one bare metal that has both ipv6 and ipv4 dedicated, but my home ISP ONLY PROVIDES ME WITH ipv4, is there any sane way of setting up my dedicated server as an IPV6 tunnel ...
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IPv6 Tunnel For Ubuntu
Hi Dear Friend I Want Run IPv6 tunnel Between 2 Ubuntu and Forward Traffic ipv4 I test Gre tunnel
Error: an IP address is expected rather than
Gre in Ubuntu Donnot support ipv6 For local And Dst ...
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0
answers
63
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How can I offer another interface IPv6 addresses?
I have two networks and their structures are as follows:
(network A) ISP router --- (eth1) - Raspberry Pi - (eth0) --- other devices like PC, smartphone, etc. (network B)
I want to assign IPv6 ...
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0
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1
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255
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Expose ipv6 to virtual machine
I have a root server with a single ipv4 address and a /64 ipv6 address range. On the server I have created a virtual machine (with multipass) for running a web server.
For that I have created a rule ...
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Some internet services do not work when using my phone hotspot
I have a problem on Ubuntu 20.04.03
When connecting to the wifi through my phone hotspot some internet services such as Slack, Gmail or even Netflix, Prime video do not work. They either do not load, ...
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1
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229
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IPv6 not working on VMs created using multipass
Commands issued on the VM:
$ ping -6 api6.ipify.org
ping: connect: Network is unreachable
$ ifconfig ens3
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.140.84.221 ...
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0
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912
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Static IPv6 setup with netplan
After running in to upgrade issues (not able to retrieve https://changelogs.ubuntu.com/meta-release-lts) I found out that my static IPv6 setup caused this issue.
However I'm stumped as how to fix it.
...
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0
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0
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666
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Trying to ssh into IPv6 address, getting "no route to host"
I have a home computer that uses Ubuntu 22.04, that I'd likely to remotely SSH into, from the internet. I'm trying to do this through its public IPv6 address. The address doesn't begin with fe80::, so ...
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2
answers
8k
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A start job is running for Wait For Network to be Configured because IPv6 blocked
I have some freshly installed Ubuntu 22.04 servers. One is already running 22.04.1, just installed today.
All of them are having the issue that "A start job is running for Wait For Network to be ...
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0
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64
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Ubuntu doesn't send out Router advertisement to its link partner
I have 2 systems connected via Arista switch.
System1 ---Arista switch ----System2
I see System1 receives Router solicitation from System2
IP6 > ip6-allrouters: ICMP6, router solicitation
But ...
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1
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wget connection stuck - log file location? [closed]
A client of mine could not download anything via WGET from any website. He didn't get any error messages in the terminal. The connection simply remained in the "connecting" status. It did ...
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Get EHOSTUNREACH for registry.npmjs.org IPv6 address
My laptop is running 22.04, and my DSL router allows for IPv6 addresses on the LAN. There is not a public IPv6 address for my network, only an IPv4 address.
I am able to reach all kinds of addresses ...
- 11
0
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0
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986
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How to fix an Ubuntu server losing its IPv6 address without any traces inside the logs
I have Ubuntu 22.04 LTS (GNU/Linux 5.15.0-1008-raspi armv7l) running on a raspberry Pi 3.
For some reason, after around 2 days of uptime, it starts randomly removing its global IPv6 address. The IPv6 ...
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123
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How to allow ipv6 to a specific port with ufw
I recently tried to deny all traffic to a specific port, then allowing it only to a specific ipv6 by using
« ufw allow from ipv6 to any port 843 »
But It don’t work, and I dont know why since it works ...
- 11
6
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1
answer
3k
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failure to resolve DNS query using IPv6, e.g. host -6 gnu.org, dig -6 gnu.org
Why doesn't the default Ubuntu LTS install allow host -6 gnu.org or dig -6 gnu.org to work?
Welcome to Ubuntu 22.04 LTS (GNU/Linux 5.15.0-27-generic x86_64)
$ host -6 gnu.org
;; communications error ...
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0
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Dual stack IPv4/IPv6 on 18.04 LTS and 20.04 LTS kills website user experience, unclear how or why
I've been running IPv6 enabled (dual stack) hosts for years. Ubuntu back to at least 16.04, maybe 14.04 and to present day. I figured this was settled technology and there were no gotchas in our ...
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3
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1
answer
1k
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Manually set an IPv6 address via the GUI
[Ubuntu 20.04.4 LTS]
I am trying to manually assign an IPv6 addr via the GUI, but whatever I seem to enter for the Prefix, it says it is invalid. Here's an example:
I've also tried the following for ...
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