Version 6 of the internet protocol, which will replace version 4.

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IPV6 Still resists

I've got a problem in disabling IPV6 under Ubuntu 14.04 I still have UDP6 port opened even I invalidate IPV6... Has anybody a solution? `o@o:~$ sudo netstat -lntup Connexions Internet actives ...
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1answer
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Questions about building a native IPv6 router/firewall

My ISP has kindly handed me a /64 prefix, and I'm building an Ubuntu router, as most of my existing equipment is too old to support IPv6. Using various articles, I've managed to get it mostly ...
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1answer
41 views

Setting up ipv6

My ISP (Charter) offers a 6RD relay to IPv6. I'd like to configure Ubuntu to use that address. Most of the links I am finding are how to disable IPv6. So I'm not sure how to get it working. I found a ...
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Initramfs suddenly speaks IPv6 but no SSH login

I have been running a configuration with an encrypted root partition and network unlock via Dropbear in initramfs for some time on my Utopic Xubuntu Mediacenter. Since I am actively using IPv6 to ...
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1answer
51 views

why does not IPv6 (RFC 4941) privacy work?

I've followed instructions on https://docs.menandmice.com/pages/viewpage.action?pageId=6361024 It simply does not work, I have no Ipv6 starting with 2001::: , only the same as before. ...
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1answer
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How to setup multiple ipv6 addresses with dyndns in xubuntu?

How to add extra 5 ipv6 addresses to my xubuntu and register them with dyndns? My xubuntu 14.10 have automatically configured ipv4 and ipv6 addresses: sam@minisrv1:~$ ip -6 addr show eth0 2: eth0: ...
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1answer
54 views

Setting up 6in4 tunnel

I'm trying to setup a 6in4 tunnel on my Ubuntu web server that is running on Amazon EC3. I've added the required text into the /etc/network/interfaces file # IPv6 Tunnel interface auto he-ipv6 iface ...
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Where do I put a dyndns script for IPv6?

I am using: /sbin/ip -6 addr|grep -v temporary|grep 'scope global'|grep -oE '([0-9a-f]{0,4}:){1,7}[0-9a-f]{1,4}' to grep my global, non-temporary IPv6 address, that is advertised by my router using ...
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1answer
67 views

How would I use ulogd2 on Ubuntu with IPv6?

I am trying to make use of ulogd2 (package ulogd version 2.0.3-1ubuntu2) on my Ubuntu server and I run into the problem that ip6tables fails: $ ip6tables -A INPUT -m limit --limit 5/sec --limit-burst ...
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1answer
324 views

How to configure /etc/network/interface to use static IPv6, but dynamic IPv4?

I want to add a static IPv6 IP to my otherwise automatic IP configuration. How to do this? Currently I use: auto lo iface lo inet loopback auto eth0 So IPv4 is configured by DHCP, IPv6 is ...
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63 views

have access to ipv6.google.com but not other ipv6 address

Briefly speaking, I have access to http://ipv6.google.com or some other ipv6 website. The ipv6 test website http://ipv6-test.com/ also says that I have both ipv4 and ipv6 connections. The strange ...
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32 views

Can connections to ::1 be made reliable in Chromium?

I just ran into this message from Chromium: The server at [::1] can't be found, because the DNS lookup failed. I was trying to access http://[::1]/, which usually works. This is on an Ubuntu ...
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57 views

Wrong IPv6 Routing

My Ubuntu 12.04.5 LTS servers have all the same problem. When I access a website which has IPv6, everything works fine and the website shows up. When I access a website which has no IPv6, it always ...
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1answer
164 views

Ubuntu 14.04.1 DNS issues

For some reason DNS is flat out not working on our new OpenStack Cluster. For example, just installed a new Ubuntu 14.04.1 OS (Ignore OpenStack, this is really just a blank single physical server at ...
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86 views

Always getting 128bit dhcpv6 prefix for stateful dhcpv6 configuration

I am using ubuntu 14.04 as a dhcpv6 server. radvd is configured as interface eth1 { AdvSendAdvert on; AdvManagedFlag on; AdvOtherConfigFlag on; prefix 2001:888:0db8:1::/64 { ...
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128 views

IPv6 assign a network on a loopback address

I need some help with IPv6. I have an Ubuntu 12.04 server with multiple IPv4 networks on the loopback. For example: ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu qdisc noqueue state UNKNOWN ...
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2answers
117 views

Ping Adress IPV6 [closed]

Please, how to ping between the two machines (have IPV6 addresses)? Thanks a lot.
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41 views

IPV6 Gives out multiple subnets

I have no idea what I've done but I'm attempting this: Ubuntu Server 14.10 -> Asus 1900 -> LAN with everybody getting ipv6. eth0 is ISP (Comcast) eth1 is from Ubuntu to Asus Somehow I made it here ...
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197 views

Slow boot up of new install of Xubuntu 14.04 LTS on Dell Inspiron 6400

I have recently installed Xubuntu 14.04 LTS on a Dell Inspiron 6400 laptop and now it takes about 20 seconds to boot up. Here is a section of my dmesg output: [ 2.689941] random: init urandom read ...
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225 views

How to configure Ubuntu as IPv4 and IPv6 router with shorewall

I have a dual port Ubuntu server 14.04 configured as router for IPv4 with shorewall. It works fine. I now want to support IPv6 but it fails. I installed and configured shorewall6 according to the ...
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119 views

Bridged VM guest does not get IPv6 ra prefix from host

I have a similar problem and setup as described in IPv6 does not work over bridge. My host get a IPv6 prefix but the guest VM only gets a local fe80-prefix. Using tcpdump I can see that solicit ...
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109 views

How to make IPv6 duplicate address detection (DAD) work on Ubuntu?

I have an Ubuntu host running inet6 dhcp. This is what I configured on the /etc/network/interfaces file: auto eth1 iface eth1 inet6 dhcp up sysctl net.ipv6.conf.eth1.accept_ra=1 pre-down ip ...
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1answer
712 views

Firefox becomes very slow, showing spinning circle “connecting” for ages, ipv6 is disabled, no proxy, and disabling addons doesn't work

So I am a brand new Ubuntu user, and just getting the feel of the OS. Tried it on a friends computer, and really liked the system. Have just done a full install of 14.04 on an Asus UX32A (originally ...
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30 views

Unable to get both RA and DHCP6 address on a particular nic

My host is connected to a network that is connected to Router and DHCP6 server. radvd.conf setting on the router is given below: interface eth1 { AdvSendAdvert on; AdvManagedFlag on; ...
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1answer
1k views

How to force IPv4 on Ubuntu Desktop 14.04

I've stripped the desktop from my installation as per my last question, but it is not assigning my server an IPv4 address, there is nothing wrong with my configuration, I just need it to give my ...
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1answer
918 views

IPv6 network is unreachable. until reboot

I've setup IPv6 on my Ubuntu 14.04 server. Everything is working.. until all of a sudden (haven't found the trigger) a ping6 2001:4860:4860::8888 (google nameserver 8.8.8.8) returns network ...
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484 views

ipv6 network unreachable

Some strange problem here, I have got an ipv6 address by DHCP, however, ping ipv6.google.com gets network unreachable. Other people in the same house using windows7 has ipv6 working fine. So, there ...
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1answer
407 views

Trusty IPV6 is disabled, but applications are still binding to IPV6 address ports

I have set sysctl to disable ipv6: vagrant@puppet:~$ cat /etc/sysctl.d/10-ipv6-disable.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = ...
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1answer
167 views

IPV6 dynamic route from DHCP

IPV6 was configured locally in my network in Ubuntu 12.04, where one of my machine runs the DHCP server and other as client. But the client was not acquiring the route from DHCP. Do we have to give ...
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126 views

How to make rdnssd honor DNSSL from radvd?

My radvd.conf have the following lines: ... RDNSS 2001:4860:4860::8844 2001:4860:4860::8888 { }; DNSSL domain.com.br { }; ... All Mac OSX IPv6 clients recognizes that option and my domain appear at ...
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1answer
359 views

ipv6 forwarding kills ipv6 connection?

Hi i'm trying to spin up VMs on public ipv6 address's. When I enable net.ipv6.conf.all.forwarding = 1 on the host it seems to kill the ipv6 connectivity root@li166-218:~# ip -6 route show dev eth0 ...
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1answer
834 views

Assigning additional labeled aliases to a single physical network interface for IPv6 addresses

Currently I am stuck trying to label the interfaces for additional IP addresses I am adding to an interface. Let's say the interface is eth0 ($IFACE), then for $ADDRFAM="inet" I can add an IPv4 ...
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2answers
1k 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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3answers
2k views

Slow DNS lookup after upgrading to 14.04

After upgrading my Kubuntu to 14.04 from 12.04, I got extremely slow DNS lookup in Firefox and Thunderbird. I have checked the communications with Wireshark. Launching e.g. http://vs.hu in Firefox ...
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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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1answer
160 views

Does nmbd binds on a IPv6-Only network?

After moving my Samba to a IPv6-Only environment, nmbd doesn't start up anymore... I tried this: interfaces = 2001:db8:1:1::/64 and with this: bind interfaces only = yes... But, nmbd doesn't ...
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386 views

Have wget fall back to IPv4 if IPv6 fails

I have a ubuntu 12.04 server that has some script that do a wget to others servers; some of those scripts starting to fail, I found the reason: the wget make a request to a remote server who only ...
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1answer
54 views

How is information passed between ipconfig and the init process at boot time

I'm trying to assign an IPv6 address to my machine at early boot time (in order to boot a diskless system over IPv6) with ip -6 addr add $ipv6/108 dev eth0 at nfs-premount. This works fine, but as ...
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1answer
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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. ...
2
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1answer
5k 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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1answer
334 views

Set primary IPv6 address

I've got a /64 of IPv6 addresses available to one of my servers (Ubuntu 12.04). I'm binding them like this: auto eth0 iface eth0 inet static address xxx.xxx.xxx.82 netmask 255.255.255.248 ...
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570 views

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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There is a problem about ipv6 on Ubuntu13.10 wireless

I’m a novice of Ubuntu. There is a problem about ipv6 on Ubuntu. My wireless supports ipv6, at the first time, I can’t connect to the ipv6 either win7 or Ubuntu 13.10.! When I use Norton to trust this ...
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3answers
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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 apt-get ...
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1answer
289 views

sudo apt-get update/ failed to update [duplicate]

I just installed Ubuntu 13.10 saucy salamander. When I try sudo apt-get update and I get the response Err http://extras.ubuntu.com saucy InRelease Err http://archive.canonical.com saucy ...
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3answers
4k views

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, it does ...
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1answer
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How to enable ipv6 support in linux system [duplicate]

I am trying to enable ipv6 support to my linux system. Im trying to modify /proc/sys/net/ipv6/conf/all/disable_ipv6 this file but system is not allowing to do so.
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489 views

whois with IPV6 support

I just tried a whois on an incoming IPV6 address. the whois program recommends upgrade. but to what? I already have the latest version int he repo. is there a different program for IPV4/6 client ...
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1answer
420 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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1answer
2k views

native IPv6 setup

I got following information from my provider: Range: 2a00:1630:2:801::/64 Gateway: 2a00:1630:2:800::1 Netmask: /56 My config file: iface eth0 inet6 static address netmask 56 gateway ...