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

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NetworkManager fails to set IPv6 default route

In my syslog my NetworkManager cries: Jun 25 12:54:59 lati NetworkManager[811]: <error> [1466848499.853623] [nm-system.c:1266] nm_system_replace_default_ip6_route(): (wlan2): failed to set IPv6 ...
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1answer
27 views

How to stop XAMPP/MySQL from defaulting to IPv6?

I installed XAMPP for Linux on a fresh Ubuntu 14.04. I started all servers and ran netstat -tupln. The mysql server is running on IPv6: tcp6 0 0 :::3306 :::* LISTEN 2818/mysqld I ...
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1answer
44 views

Losing IPv6 route or connectivity on bonded interface 16.04LTS

Good afternoon, all. Running 16.04LTS on a SuperMicro X7DBN motherboard. I have two possibly related problems that I will describe separately. First, I seem to be losing IPv6 connectivity 5-10 ...
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1answer
38 views

How to connect two differents virtual machines (VirtualBox) using IPv6 and gateway

I am trying to create a virtual machine and clonate it. When I have the copy, I try to connect them using IPv6 but I don't know how I can do it. This two virtual machines are Ubuntu 14.04. I need a ...
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1answer
19 views

Have to use -o Acquire::ForceIPv4=true to do apt-get update/upgrade

I am looking for an other workaround to my problem that apt-get upgrade/update/install wont work via IPv6. I cant use the software center neither can I use the system update center for anything. I ...
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1answer
26 views

Setting up a server with IPv6

I have just upgraded my internet and my ISP (Comcast) sent me a new modem/router in one. I have managed to set the static IP of the server but after searching all over I can't figure out how to do the ...
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33 views

ssh ipv6 - Connection timed out

I'm having "connection timeout out" problems connecting to a VPS through IPv6. sshd_config is ok, netstat tells me so: # netstat -natp | grep :22 tcp 0 0 0.0.0.0:22 0.0.0.0:* ...
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1answer
55 views

Get IPv6 address from IPv4? [closed]

Is it possible to do this? I don't care what tool, ping, nmap, nslookup. Hell, i'll even write a bash script. I just need to figure this out. Edit: All I know are IPv4 addresses and I want to see ...
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1answer
21 views

IPv6 Host Discovery?

I am trying to discover all IPv6 hosts on my MASSIVE business network (like a /32 block). I have an nmap script I think that works but sadly only for my local subnet. Would this work if I changed my ...
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39 views

Not receiving IPv6 RA packets

I have a new Dell XPS13 Sputnik edition that came with 14.04 installed and it's not picking up an IPv6 address by auto configuration. Network manager is set to Method: Automatic Running wireshark I ...
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3answers
431 views

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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1answer
25 views

Radvd prefix pass through RA

With Radvd running on my router, my client PC as everyone says on net "automagically" gets an ipv6 address. Is there any way I can use the same prefix which is published by RADVD in its RA and make ...
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24 views

IPv6 privacy extension tab missing form network manager

I have two machines. One running Wily Werewolf Ubuntu 15.10 and the other running 14.04.4 LTS, Trusty Tahr. Whatever you call the network connection app in the upper right-hand corner of the screen (...
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2answers
138 views

Issues with disabling iPv6 on Ubuntu 14.0.4

To disable iPv6 on Ubuntu 14.0.4 (LTS) I added these lines in sysctl.conf file: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 Since I ...
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0answers
94 views

How to set up Ubuntu Server as a wireless + ethernet router with IPv4 and IPv6

I have a computer running Ubuntu Server (14.04 but I want to upgrade to 16.04 when it becomes available) with two Ethernet interfaces and one WiFi interface. The interfaces are: Ethernet towards ...
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36 views

OpenVPN only getting local IPV6 no IPV4 when connected

so let me start by saying this is my first time attempting to set up a vpn server and first time using firewalls on linux. Basically I followed the digital ocean guide (https://www.digitalocean.com/...
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26 views

What does the command “ip -6 neigh” mean?

I want to figure out what it shows to me. The result on my Ubuntu: fe::80::fe48:efff:fe30:c7b dev eth0 router FAILED Whose IP address is this?
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117 views

getent hosts ipv6 vs ipv4

I have an Ubuntu System with IPv6 disabled. Somehow getent hosts returns a list of IPv4 adresses, but if I query for a specific host I get an IPv6 address: root@pc170:~ % cat /proc/sys/net/ipv6/conf/...
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22 views

ioctl for delete ipv6 address for 2.6.30

My kernel is 2.6.30-ts-powerpc. Any one can tell me which macro is use in ioctl to delete ipv6 address? I tried SIOCDIFADDR_IN6 but this is not proper for 2.6.30 kernel.So there is no header file for ...
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0answers
59 views

lxc container not resolvable with IPv6

I set up a container on Ubuntu 14.04 trusty. The container also uses Ubuntu 14.04 trusty as template. The network is set up as bridged. My network interface from the hosts (eth0) is bound to the ...
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1answer
193 views

Setup static ipv6 address in /etc/network/interfaces

After changing to a new ISP last week I got a new IPV6 address at home. The IPV6 address is global so not just for my home connection. Because of this address my mail server isn't working properly ...
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37 views

configuring 6to4 on ubuntu 15.04

I need to use IPv6 address. So I configured 6to4 tunnel as it described here: http://ipv4.6to4.ru/howto/debian/. But when I try to ping something I get this: $ ping6 ipv6.google.com PING ipv6.google....
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1answer
47 views

IPv6 not working with Static IPv4 address

Despite interfaces getting IPv6 autoconfiguration addresses with iface ethX inet static in /etc/network/interfaces, IPv6 routing does not work.
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135 views

Disable ipv6 in ubuntu 14.04

I found that post How to disable IPv6 on Ubuntu? I need to ask about this file /etc/default/bind9. I couldn't find this file. Where can i find it?
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136 views

How can it bind port with ip address not 0.0.0.0?

I'm new to ubuntu also in networking so if you need more details i can provide you with it I binded port number 7700 , I got error in binding it like error in binding 0.0.0.0/0.0.0.0:7700 I read ...
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65 views

How do I enable privacy extensions with an IPv6 tunnel broker?

I'm using Hurricane Electric's 6in4 tunnel broker to create an IPv6 tunnel interface on my Ubuntu 15.10 machine. At the moment the relevant part of /etc/network/interfaces looks like this: auto he-...
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91 views

Create wifi access point with ipv6 address range

I want to create WiFi Hotspot to connect android devices to it in ubuntu 12.04 with internet connectivity also I want to use ipv6 addresses for the same. what can be solution to achieve this?
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202 views

OpenVPN, IPv6 and DNS Leaks in Ubuntu 14.04

I have been trying to set up a secure connection using OpenVPN but I've been running into some issues with DNS leaks. Basically, I have no problems getting the VPN service up and running using ...
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2answers
125 views

How to enable IPV6 packet capturing in WireShark at the same time as IPV4?

I am running Ubuntu 15.10 with GNOME 3.18, and for some debugging work need to capture IPV6 packets going to and from a specific port, however I understand that by default IPV6 packets are not ...
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54 views

LXC without NAT

I have an LXC Container that I want to be "directly" connected to the Internet, not as a NAT. I have an IPv6 RA agent that would assign it an IPv6 address and/or DHCPv4 for a regular 192.168.1.0/24 ...
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41 views

LXC to use IPv6 from HE tunnelbroker

I installed lxc on Ubuntu 14.04 64 bit. All work well. The containers can access internet via the default lxcbr0. Now I get a /64 and a /48 from Hurricane Electric Tunnel Broker (https://www....
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39 views

Update fails when ipv6-tunnel is active

I have an ipv6 tunnel (hurricane electric) to experiment with ipv6. Unfortunately, when the tunnel is active, I can't update my server, where the tunnel is running. Bringing the tunnel down enables ...
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30 views

IPV6 routing packets from eth0 to another interface

I have a device with an Ethernet connection and a wireless connection. I have an apache server on the device and a wireless stack that communicates with ipv6 wireless devices My wireless stack uses ...
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1answer
509 views

My miredo client don't work after upgrading to 15.10

I have used miredo in 15.04 ,and it works very well.But after I upgrad my Ubuntu to 15.10 yesterday,it doesn't work any more.Here is some information. $ ifconfig teredo teredo Link encap:UNSPEC ...
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53 views

Can't automatically start ipv6 forwarding

I have a PC that only has 1 NIC. I created two vlan's to make a router, my switch "distributes" these vlan's. On ipv4 everything works fine. To have ipv6 forwarding I need to do sysctl net.ipv6....
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77 views

I cannot connect to google and facebook through ipv6

max@min:~$ ping6 ipv6.google.com PING ipv6.google.com(hkg08s13-in-x0e.1e100.net) 56 data bytes 64 bytes from hkg08s13-in-x0e.1e100.net: icmp_seq=1 ttl=51 time=75.5 ms 64 bytes from hkg08s13-in-x0e....
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207 views

How should I configure DNSMASQ for an IPv6 environment?

Id like to deliver IPv6 addresses (thats easy) and resolve DNS requests for Internet and local IPv6 clients (that's difficult), but I'm missing a comprehensive guide how to do this with DNSMASQ. There ...
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11 views

Is routing and maquaridng with virtual intfaces possible?

I'd like to connect two subnets by an Ubuntu server, but the machine has only one Ethernet adapter. The server should provide DHCP and DNS cache for the internal network by DNSMASQ. I'm not able to ...
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83 views

problem with multiple global ipv6 adresses

(first sorry for my bad english) as I don't get any answers from the ubuntu forum about my problem I go post here. I don't work at the moment with any linux host, I only use VM(debians and ubuntus). ...
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182 views

ipv6 global address missing after link flap

in linux/ubuntu after the link flap on an interface the global ipv6 address is flushed out & not seen in ifconfig. Any kernel patch/sysctl to retain the ipv6 address configured after the link flap....
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1answer
156 views

Ubuntu router returns ICMP administratively prohibited for all IPv6

I am using an Ubuntu 14.04 machine, named ubu1404-150805-3, as a dual-stacked (IPv4 and IPv6) router. I have a client machine, named ubu1404-150805-2, that is also Ubuntu 14.04 and whose only network ...
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1answer
132 views

Disable IPv6 on 14.04 with IPv6 disabled kernel

How do i disable system wide IPv6 within ubuntu? I know so many answers in here about this but situation is different. This is an embedded device. Here is my conditions: IPv6 disabled in kernel to ...
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1answer
111 views

configuring dhcp with dynaminc ipv4 and ipv6 address

i just want to know that is that possible to configure dynamic ipv4 and ipv6 address on eth1. i tried ipv4 is working but ipv6 doesn't. if yes then how. If not then what should i do. Because i want ...
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39 views

I can't use use ipv6 - when it's on the adapter sends deauth packets - please help me fix it

The internet works fine when I don't enable ipv6, but when it's on I get deauthentication packets in dmesg outputs: root@grepsly:/home/isme# dmesg -T |grep deauth [Mon Aug 31 23:18:24 2015] wlan0: ...
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2answers
242 views

Disable IPv4 mapped IPv6

I run a service on IPv4, but sometimes, apparently randomly, it happens that the service uses TCPv6 sockets (I monitor it with ss -s). I want to avoid it, disabling any IPv6 connection. I tried to ...
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1answer
417 views

IPv6 SLAAC (ICMPv6 Router Advertisments) are ignored by wlan1 interface

I installed 15.04 on my Thinkpad W520. However, I'm not able to get IPv6 working on wlan1 interface: ifconfig wlan1 wlan1 Link encap:Ethernet HWaddr 8c:70:5a:d2:65:bc inet addr:10.0....
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48 views

IPv6 auto configuration broken

Ubuntu wily (but i think this behaviour started with vivid). I get an IPv6 address via autoconfiguration but not default gateway. net.ipv6.conf.all.accept_ra = 1 is set Any ideas?
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340 views

How to configure dynamic DNS for IPv6 using bind and isc-dhcp-server

I have a ubuntu 14.04 LTS machine created in VirtualBox which I could configure IPv4 delegation via isc-dhcp-server. Then by follow this great tutorial, I could configure such machine to also update ...
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810 views

How can I bring down this tun interface?

I can neither bring down nor delete this tun interface which is added on startup. Here's the output when I run ifconfig: eth0 Link encap:Ethernet HWaddr 50:b7:c3:92:38:e2 UP ...
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23 views

How to disable “return routability procedure” in mip6d?

I am using mip6d on ubuntu 12.04 with kernel 3.8.2. When I change the IP address (CoA) of Mobile Node, the Mobile Node before sending a update message to CN, sends Care of Test init and wait for CN's ...