Internet Protocol version 6 (IPv6) is the latest version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.

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45 views

Is there a browser that supports IPv6 Link Local addresses?

I'd like to know at last one browser that allows me to browse fe80::4216:7eff:fe9f:79ac%enp2s0f0, for example. I've checked there're many tickets open in bug trackers of big name browsers like Firefox ...
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1answer
7 views

How to disable autoconf feature of IPv6 usinf interfaces file?

I am using linux 3.2.0. I want to disable autoconf feature of IPv6. For that I have added following lines in /etc/network/interfaces file. iface inet6 eth0 static address <IPv6_address> netmask ...
0
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1answer
25 views

Old IPv6 address does not disappear using another router

My computer connects to a router via an ethernet cable. I have then an global address IPv6 for example : a::face/64. Here is my network configuration at the auto-configuration mode : auto eth0 iface ...
4
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1answer
56 views

Why are IPV6 privacy extensions not working in Arch Linux?

I have native IPv6 via my ISP, with a routed /64 block. IPv6 is working on my internal network. (ie. I can ping ipv6.google.com) All devices on the network have IPv6 addresses allocated, and with the ...
1
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1answer
34 views

Adding IPv6 breaks StackExchange [closed]

I added IPv6 on my Ubuntu 14.04.3 LTS laptop by adding an OpenVPN tunnel to my Ubuntu 14.04.3 LTS server that has IPv6. I am using masquerading on both IPv6 and IPv4. Using StackExchange used to ...
1
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1answer
22 views

Using IPV6 in Hetzener under KVM virtualization

I have a VPS which is being managed with SolusVM + KVM in Hetzener data-center. I got one IPv6 but don't know how set it up. I tried this, did not work for Debian 7 64 bit: iface eth0 inet6 static ...
0
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0answers
11 views

ipv6 connectivity problems

I've got persistent ipv6 problems with my laptop running kubuntu 15.10 : download speed is very slow, and some transfer just end up totally stalled or timed out (ipv4 runs perfectly fine). It's not a ...
2
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0answers
23 views

Manually configure Link-Local IPV6 regardless of ISP

The long and short of it is we have a system with a single ethernet port and we need to provide both an IPV4 connection (that can be completely incontrol of the user and varies per system) and we want ...
0
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1answer
32 views

Connections via IPv6 are reset while IPv4 works fine

I just set up a new Arch Linux system. Most networking applications (pacman, git, spotify e.g.) seem to be working just fine. All IPv6 connections though are reset by the server. curl -6 google.com ...
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0answers
25 views

DNS problem with ipv6 on centos6

I have a couple of open-stack instances that communicates with github.com. When any of these machines reboots , the file /etc/resolv.conf gets the ipv6 addresses of my DNS servers. Everything still ...
1
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1answer
78 views

cannot read key “net.ipv6.conf.all.stable_secret” in sysctl?

I am running kernel version as followings on an Arch Linux computer: [root@router ~ ]$ uname -a Linux router 4.2.5-1-ARCH #1 SMP PREEMPT Tue Oct 27 08:13:28 CET 2015 and I noticed that every time ...
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0answers
33 views

IPv6, dnsmasq dhcp-range

I'm trying to assign IPv6 addresses to my LAN clients with dnsmasq 2.62 on Debian Wheezy: enable-ra dhcp-range=interface:br0,fde4:709f:bee2:a87b::,fde4:709f:bee2:a87b::ff,ra-stateless The ...
3
votes
2answers
37 views

File exists error while restarting network interface (Debian)

I'm running a Debian GNU/Linux 8 server for school assignments. While trying to do service networking restart, it gave me this error: root@server:~# service networking restart [warn] Running ...
0
votes
1answer
29 views

Linux routing IPv6 packets through incorrect interface

I have a Arch Linux system where link-local packets are not being routed properly. I have 4 interfaces on this machine (wan, lan0, lan1 and lan2). All three of the lanX interfaces are bridged ...
2
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3answers
131 views

Validating IP addresses (IPv4 and IPv6)

Quite simply I'd like to verify that a string represents a valid IP address in a bash script. I think like many others I've fallen into the pitfall of trying to do this with a regular expression; ...
0
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0answers
40 views

why i can see ipv6 socket with ipv6 stack disable?

I try to disable complety ipv6 on a Linux Debian 7 (wheezy) However , things escape me. In my case, i test with grafana process (I have same issue with munin, rpcbind etc) Method 1 : with sysctl ...
0
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0answers
22 views

Unable to setup ipv6 on solaris 11.3

I am having some difficulty after moving to Solaris 11.3 and setting up IPv6 addressing. The interface I am using is net2. I have created an IPv4 address already on this. So to do this I would have ...
0
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0answers
51 views

IPv6 router advertisement seems to break OpenVPN setup

I have an OpenVPN setup on Debian Jessie, or Raspbian to be precise, that provides an IPv4 and IPv6 subnet for the clients. The server configuration of OpenVPN contains: dev tun server-ipv6 ...
3
votes
0answers
65 views

curl request to IPv6 localhost gets stuck

A docker container of mine exposes a HTTP interface on port 8500, which is mapped to host port 8500. It is not IPv6 enabled. This still means, I should be able to access it at localhost:8500. IPv6 ...
1
vote
1answer
60 views

Resolving IPv4 address from DNS using the IPv6 address of a host (bind9)

I need to make a DNS query to one of my clients using IPv6 to resolve the IPv4 address for the machine, how would I go about doing that. I know i can just use the hostname to resolve both IPv4 & ...
1
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0answers
87 views

Systemd networking: IPv6 networking not available at boot

I've a Debian machine running multiple static IPv4 and IPv6 addresses managed by systemd itself at /etc/systemd/network/10-static-eth0.network as follows: [Match] Name=eth0 [Network] ...
0
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1answer
78 views

THC-IPV6 Kali Linux 2.0

After I have upgraded to Kali Linux Sana I have noticed that the THC-IPV6 kit ,with tools such as flood_router26, has disappeared. If somebody could tell me where it is, or how to install it again, I ...
4
votes
1answer
118 views

What is the IPv6 equivalent for 127.0.0.0/8

I am trying to set up an IP6tables firewall on Linux and I basically want to start copying my IPv4 configuration. One of my rules simply accepts all traffic to the localhost subnet: iptables -A ...
0
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1answer
63 views

Can't enable net.ipv6.conf.eth0.autoconf

I can't get net.ipv6.conf.eth0.autoconf to = 1. Goes back to 0 after every reboot causing eth0 to never auto-acquire a global IPv6 address. I am running a headless Debian Jessie (kernel ...
0
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0answers
50 views

How to make OpenWrt router advertise itself as IPv6 default gateway?

I have an OpenWrt Barrier Breaker router which is configured with a /48 ULA prefix. Connected Windows clients have two established routes to this space: /64 On-Link and /48 via link-local address. ...
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0answers
67 views

OpenWrt wifi bridge with IPv6

I am running OpenWrt 15.05 on my WDR4300. My ISP is via cable with legacy-IPv4-only. For IPv6 connectivity I use HE.net tunnel to receive a static IPv6 /64 subnet. My office is in a different room ...
1
vote
1answer
39 views

Cannot make ipv6 ULA addresses work

I wanted to assign Unique Local Addresses (ULA) to a couple of machines inside my LAN alongside the link-local ones and the globally routable ones. I am currently running dual stack. I also wanted to ...
2
votes
1answer
42 views

Cannot ping a tap device with ipv6 address

I'm running CentOS 7. First I created a tap device: ip tuntap add dev tap2 mode tap Then I assigned ipv6 address to it: ip -6 addr add dev tap2 fd00:4::1/64 ip link set tap2 up Its state ...
2
votes
2answers
46 views

Retrieve IPv6 address of website using terminal

Both the nslookup and host commands return IPv4 addresses only. How can i retrieve the IPv6 address of a website using the terminal? (I have googled around, unfortunately I couldn't find anything ...
0
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0answers
37 views

How to disable IPv6 ping response in Linux without firewall

How can I disable IPv6 ping responses in Linux without using the IPv6 firewall? This question covers how to do this using the IPv6 firewall via iptables, but I'm using an embedded system that doesn't ...
0
votes
1answer
50 views

IPv6 delete route

Some times ago I played around with the IPv6 routes and I made confusion :) That is my routing table root@banana:~# route -6 Kernel IPv6 routing table Destination Next Hop ...
0
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0answers
20 views

IPv6 Conf Cisco Router-Firewall

I saw some posts about Cisco around the forum and I'll try to ask you a question about my Cisco IPv6 Set-Up I'm struggling to get a right IPv6 configuration on my Cisco 887VA and Cisco PIX firewall. ...
0
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1answer
37 views

According to socket statistics Apache listens only on IPv6, but actually serves IPv4 as well

ss -lnp in server shows following information: # ss -lnp Recv-Q Send-Q Local Address:Port ...
1
vote
1answer
184 views

ping6 error 'operation not permitted'

I am unable to ping6 my gateway or beyond. I am able to ping6 my loopback successfully, but that is all. [\u@r2d2:/root] # ping6 ipv6.google.com PING6(56=40+8+8 bytes) ...
0
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0answers
47 views

Ubuntu Configuring static route with IPV6

I am having trouble getting ECE4110Host1 to ping ECE4110Host2 via static routing. I did it in IPV4 but not sure why I cant get it in IPV6. In the ECE4110Host1 command I enter: sudo ip -6 route ...
2
votes
1answer
50 views

Network interfaces up order, ipv6 tunnel problem

I have a ipv6 tunnel interface, that is using my network connection on eth0. when I turn on my system something messes up the things and I have no ipv6 connectivity. The system is Ubuntu 14.04 server ...
1
vote
1answer
34 views

IPV6 ND router advert Malformed packet

Am trying to simulate IPv6 ND router Advertisement packet in openvswitch for one of my projects, but the formed packet is malformed(analyzed it in wireshark). Following is the packet dump I created, ...
1
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2answers
95 views

What's the use for the special ipv6 addresses in /etc/hosts?

I have the following block in my /etc/hosts: # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ...
1
vote
1answer
317 views

centos: ping6 unknown host

I have centos 6.5 with ipv6 enabled and working (partially). When I'm trying to execute "ping6 bin6.it" it returns error "unknown host": [root@centos ~]# ping6 bin6.it unknown host Host is ...
2
votes
1answer
54 views

What's ndisc_cache?

Suppose I want to use : $ ip ntable show dev eth0 inet arp_cache dev eth0 refcnt 4 reachable 20744 base_reachable 30000 retrans 1000 gc_stale 60000 delay_probe 5000 queue 31 ...
0
votes
0answers
15 views

how unshare -i/-p/-U and -r works in realtime

Can anyone give examples of unshared command for -i, -p, -U and -r options. I got only -m and -n examples to test my code. And please mention any test cases to test IPv6 for unshared too. Thanks, ...
0
votes
0answers
40 views

OpenVZ OpenVPN IPV6 Routing Problem

I have an OpenVZ server with OpenVPN on it, and I also have IPV6 being routed to it. (Currently two /64 blocks) I was trying to route one /64 block to the main system for use with other processes such ...
1
vote
3answers
56 views

Adding recursive entries into `/etc/hosts`

I'd like to add shorthands for various FQDNs into the /etc/hosts file, such as: pyrrha.compsci.university.org. pyrrha Is there a way to force the local DNS resolver to process the /etc/hosts ...
0
votes
1answer
1k views

enp3s0: link is not ready

I've some strange messages in the dmesg output: [ 7.588762] IPv6: ADDRCONF(NETDEV_UP): enp3s0: link is not ready [ 7.589616] IPv6: ADDRCONF(NETDEV_UP): enp3s0: link is not ready [ 7.591897] ...
8
votes
1answer
275 views

Blocking SSH Brute Force attacks on IPv6

I recently had to work with some servers that have an IPv6 connection and I was surprised to find out that fail2ban does not have IPv6 support, neither does denyhosts. Searching on google I found that ...
0
votes
1answer
204 views

Why is my CentOS 6 system doing IPv6 lookups?

I have a fairly recently installed CentOS 6.6 system. I have disabled IPv6 as best I can: IPV6INIT=no in ifcfg-[eth0|lo] net.ipv6.conf.all.disable_ipv6 = 1 in /etc/sysctl.conf ...
0
votes
1answer
97 views

Centos 7 with facebook php-sdk4 - Network is unreachable

I am not sure why I am getting this error. Sometimes, it works and sometimes I get this error in the error log: Exception: Failed to connect to 1a02:1234:f000:4:face:b00c:0:1: Network is unreachable ...
3
votes
0answers
65 views

Linux Routing Question

I was wondering how it would be possible to have multiple IPv6 default gateways on CentOS linux. I currently have two interfaces with IPv6 (venet0 and tb0), both with different blocks routed to them. ...
0
votes
1answer
100 views

To stop auto generated IPv6 link local address

How can I stop assigning of link local IPv6 address? I have tried to do it by disabling the accept_ra and autoconf options, but it is not working.
0
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1answer
158 views

Assigning link, site and global IPv6 address

How can I assign link, site and global IPv6 addresses at a same time using /etc/network/interfaces file? I am able to assign any one of them address at a time.