Questions tagged [ipv6]
Version 6 of the internet protocol, which will replace version 4.
395
questions
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How to disable IPv6 in Ubuntu 14.04?
I am using Ubuntu 14.04. And I have done the following to disable ipv6.
I have open /etc/sysctl.conf using gedit and paste the following lines at the end of sysctl.conf.
net.ipv6.conf.all....
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votes
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answers
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apt-get update stuck: Connecting to security.ubuntu.com
When I run apt-get update on my machine it gets stuck at:
100% [Connecting to security.ubuntu.com (2001:67c:1562::15)] [Connecting to archive.canonical.com (2001:67c:1360:8c01::16)]
I have made no ...
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How to disable IPv6 permanently?
How can we disable IPv6 system wide via terminal commands?
I've read editing /etc/modprobe.d/aliases
and replacing:
alias net-pf-10 ipv6
with:
alias net-pf-10 off
alias ipv6 off
Is this safe to ...
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votes
1
answer
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Why do I get multiple global IPv6 addresses listed in ifconfig?
This could be a no-brainer, but when I look in ifconfig it lists two different global IPv6 addresses. Is there a reason why I'm getting two assigned? Shouldn't I just get a single address?
valorin@...
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votes
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answers
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How to make scp to use ipv6 addresses?
When I try to use scp over IPv6 addresses I get this:
scp -6 osis@::1:/home/osis/test.file ./test.file
ssh: Could not resolve hostname : Name or service not known
With scp all I ever get is
ssh: ...
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votes
7
answers
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views
How to disable IPv6 when connecting to an OpenVPN server using Network Manager on a dual-stack system?
I'm using the OpenVPN client through the OpenVPN Network Manager plugin on a dual stack (meaning configured both for IPv4 and IPv6 connectivity) Ubuntu 13.10 to redirect all traffic through the VPN (...
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votes
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answers
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How to disable IPv6 on Ubuntu?
I disabled IPv6 on an Ubuntu box which has ssh and rsync running. But both of these are still listening on an IPv6 address. How should I fix this?
[email protected]:~# sysctl net.ipv6.conf.all....
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votes
6
answers
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IPv6 is working, but IPv4 isn't
I've got a new laptop running Ubuntu 16.04 that worked like a charm for a couple of weeks but has now lost its appetite for connecting to the internet via Wi-fi. I know it's not a problem with my ...
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votes
3
answers
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How to dynamically enable and disable ipv6 on an interface
How to dynamically enable and disable IPv6 on an interface so that it gets link local address when enabled?
I have tried:
sysctl net.ipv6.conf.all.disable_ipv6=1 to disable IPv6
and
sysctl net....
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19
votes
6
answers
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views
How to let the browser prefer IPv6 over IPv4?
I installed miredo and have IPv6 up and running it seems. I can ping6 hosts and download webpages with wget or my webbrowser when I specify IPv6 addresses, however whenever I specify a hostname that ...
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votes
3
answers
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How to disable IPv6 on Windows Subsystem for Linux?
I tried to disable IPv6 by adding in /etc/sysctl.conf:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
and then running sudo sysctl -p to ...
16
votes
1
answer
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Disable IPv6 on Ubuntu 20.04
Simple way that worked for a very long time was adding in /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
Afterwards ...
- 291
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votes
1
answer
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Diskless Boot with IPv6
At our work we are using around 80 diskless machines running Ubuntu. We want to make the transition to IPv6, so now I'm trying to get our diskless system to work with IPV6. The transmission of the ...
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answers
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How do I add an additional IPv6 address to /etc/network/interfaces?
this question How do I add an additional IP address to /etc/network/interfaces? mostly asks what i want except that i want to add more IPv6 addresses in the same interface eth0 without incrementing to ...
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How to allow an IP (ipv6) address using ufw?
I'm using Ubuntu 16.04 LTS, and I want to block all connections except some IP addresses. I ran these commands
ufw default allow outgoing
ufw default deny incoming
ufw allow ssh
ufw enable
ufw allow ...
- 139
12
votes
3
answers
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views
Disabling IPv6 on a single interface
I'm slightly weirded out by the fact that Ubuntu won't process ipv4 DHCP unless you explicitly tell it to, but will happily take ipv6 RAs unless you tell it not to. Is there any way to change the ...
- 259
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votes
4
answers
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views
Disable ipv6 in Exim4
Exim4 has an option disable_ipv6=true. As great in many ways as Debian/Ubuntu's split configuration files for Exim4 may be, it makes it difficult sometimes to know where to put configuration options.
...
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votes
2
answers
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Hurricane IPv6 buffer space error
I am trying to set up a Hurricane IPv6 tunnel on my Ubuntu 11.10 computer. I have set up my /etc/network/interfaces file as stated on https://wiki.ubuntu.com/IPv6#Get_connected_with_Hurricane_Electric....
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How to set up IPv6 with netplan on Ubuntu 18.04?
I purchased a dedicated server installed with Ubuntu 18.04 which was given an IPv6 Block.
I used the guide How to set up IPv6 on Ubuntu 16.04 before.
Since Ubuntu 18.04 uses netplan instead of /etc/...
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votes
3
answers
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How do I get a stable IPv6 address in 16.04?
I have a domain name that points toward my home server. Under every Ubuntu release up through Wily, by default I had a stable EIU-64 address that I could use for my AAAA record. However, after ...
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votes
2
answers
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How can I set /etc/network/interfaces to just autoconfigure ipv6?
I have a machine that I just want to run ipv6 on, no ipv4.
I want to use an autoconfigured ipv6 address - I have radvd running on my network and it is working fine.
However there is no config in /...
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votes
3
answers
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How to remove the sit0 network interface?
when I type ifconfig -a, there is a sit0, why it is here, and how to delete it?
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 ...
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votes
3
answers
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Trying to enable IPv6 results in a "No route to host" error
I'm configuring a dual stack network on a KVM server using static IPv4 and IPv6 addresses furnished by my provider.
I input all addresses, nameservers and gateways as required when installing Ubuntu. ...
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votes
2
answers
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views
Using IPv6 for SSH connections issues
I'm having issues understanding how to use the IPv6 protocol to connect to other computers over SSH. I tried just using the address provided from ifconfig but it doesn't seem to work, I keep getting ...
- 382
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votes
4
answers
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How to make Ubuntu honor "ignore-hosts" proxy settings for IPv6?
I just typed under "dconf-editor", System → Proxy → ignore-hosts, the following content:
['localhost', '127.0.0.0/8', '::1', '192.168.0.1', '2000::/3', 'fc00::/8']
But, Google Chrome (and ...
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10
votes
5
answers
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How to add two IPv6 dns-nameservers into /etc/network/interfaces?
With IPv4, I can add two DNS Name Servers without any problem, like this:
"dns-nameservers 8.8.4.4 8.8.8.8"
Then on my resolv.conf I got:
nameserver 8.8.4.4
nameserver 8.8.8.8
BUT, ...
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votes
3
answers
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views
ipv6 tunnel in Ubuntu 17.10?
I used to be able to do the configuration below with no issues in /etc/network/interfaces but now it's not picked up anymore. How do I configure a ipv6 tunnel now? I see see the new netplan software ...
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votes
1
answer
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RFC7217 (stable privacy addresses) implementation in Ubuntu 16.10
I'm the author of IETF RFC7217, and I'm trying to figure out whether Ubuntu 16.10 implement support for RFC7217.
It seems that there is no support in the version of NetworkManager Ubuntu is using, or ...
- 101
9
votes
3
answers
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views
IPv6 does not work over bridge
I installed Ubuntu 14.04 server a week ago. I use it as a virtual machine host (tasksel installed). meaning am running it with kvm + libvirt.
I have set up the same bridge I had in 13.10.
auto p4p1
...
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9
votes
2
answers
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views
Ipv6 - Connect : Network is unreachable
I've just created a virtual Ubuntu machine in VMWare Player but ipv6 is not working.
When I try to ping Google with
ping6 www.google.be
I get
connect: Network is unreachable
When I use ...
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9
votes
2
answers
2k
views
How to disable NAT for IPv6 (NAT66)?
The current Ubuntu LTS does not support NAT tables for IPv6 (i.e. there is no ip6tables -t nat), and I'm fine with that, in fact, a NAT-less environment is the "core" of my networks.
But, the next ...
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votes
1
answer
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Sysctl IPv6 disable autoconfig for all interfaces not working
I am trying to turn off IPv6 autoconfig for my all interfaces (I have 4).
I want to use
net.ipv6.conf.all.autoconf = 0
In the my sysctl config (under /etc/sysct.d)
But the settings not applied for ...
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votes
4
answers
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views
Have to run sudo dhclient eth0 automatically every boot
I just installed ubuntu 12.04.1 alternative install (for raid 0 on some disks). I Have some problems with the net. I'm at school, we use cable, and it got IPv6.
If I run ifconfig eth0 heres my output:...
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votes
1
answer
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views
Is there a identd-like package in Ubuntu that supports IPv6?
Of those identd daemons available in Ubuntu 10.04, can any of them be made to work with IPv6?
If so, a nudge in the right direction regarding how to configure the IPv6 support would be nice.
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2
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Ubuntu Server 20.04 - Netplan configuration for dynamic IPv4 and static IPv6
TL;DR
Does anyone have a working netplan configuration that sets a dynamic IPv4 and a static IPv6 under Ubuntu Server 20.04?
What works
My provider (OVH) gave me a server with this configuration in /...
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votes
1
answer
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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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votes
2
answers
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Format of IPv6 addresses in the netstat output
When I use netstat -n, it won't display the whole IPv6 addresses. The local ip address is in this format xxxx:xxxx:xxxx:xxxx:portNum, so just a part of the address is displayed. Also the foreign ...
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Can't browse IPv6 Websites
I am using 20.04 LTS, but suddenly I can't browse websites which has their IP addresses as IPv6, for example (hepsiburada.com).
Even apt update command no longer works, because Launchpad is ...
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votes
2
answers
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18.04 - How to disable temporary/privacy IPv6 addresses?
I have 18.04 installed and I'm using it as jump box to reach other things.
Some of the things I need to access are only reachable via IPv6 and expect me to connect from a specific IPv6 address so my ...
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votes
2
answers
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How can I force WiFi connection to only use ipv4?
I have Broadcom bcm43224 wifi card with proprietary broadcom sta driver.
At home wifi connection works well, but in the office when I ping some resource there is a lot of loss packets and I cant ...
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votes
3
answers
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views
Why do the interfaces show ipv6 address along with ipv4
I have manually specified only ipv4 address for my interfaces. But all the interfaces automatically show inet6 address as well. Does it mean that ubuntu starts an ipv6 tunnel by default. If it does, ...
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votes
2
answers
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IPv6 over PPPoe?
What is the best way to be able to get IPv6 addresses over PPPoe?
I currently use NM-Applet to get internet service from my ISP, but it has no IPv6 tab on PPPOE connections. I wouldn't mind using ...
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votes
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://...
6
votes
2
answers
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IPV6 auto configuration not working
In Windows 7, my computer can automatically get a IPV6 global address and use IPV6 network, but in Ubuntu Natty, I can't find out how to let stateless configuration work.
My network is a university ...
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votes
2
answers
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20.04: Why does sysctl.conf fail to disable ipv6 on the main interface?
I am aware of the grub kernel params method but I'd like to understand why the sysctl approach is not working.
On a 20.04 server if I add net.ipv6.conf.(all|default|lo).disable_ipv6=1 (presumably &...
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1
answer
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Restarting the IPv6 network stack without restarting the IPv4 network stack?
In Ubuntu I use SSH to log in to my webserver. The IPv4 side of things is configured and already works, I can log in from other machines.
But I'd like to configure the IPv6 side of things while I'm ...
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votes
3
answers
530
views
IPv6 FAQ and checklist for a home user?
Can we start an IPv6 FAQ and checklist for a (*)Ubuntu home user, covering both hardware and software?
The answers can cover the following areas:
ISP readiness.
Home router readiness and ...
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votes
0
answers
3k
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How to use "docker.io" containers in Ubuntu 14.04 with IPv6? [closed]
I'm trying this:
At the physical host with Ubuntu 14.04 (container's gateway for both IPv6 and IPv4), I tried:
root@docker-srv-1:~# ip -6 a a 2804:XXX:4:acbd::1/64 dev docker0
Of course, host ...
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votes
1
answer
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netplan gateway6 seems to have no effect
I'm trying to configure static IPv6 with netplan on a cloud server (public cloud from OVH) running Ubuntu 18.04
I have created a /etc/netplan/66-ipv6.yaml yaml file in addition to the existing /etc/...
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votes
3
answers
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Can I have native ipv6 communication?
I wonder if I can communicate via IPv6. I know this depends on the ISP. Is there any simple way how to deterimne if my ISP provides IPv6 connection or at least if my router provides this functionality?...
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