Questions tagged [ipv6]

Questions about IPv6, the newest version of the Internet Protocol. This tag should be used when asking about personal/home network IPv6 addressing, or basic IPv6 knowledge. Questions related to company-grade IPv6 networks are off-topic and should be asked on Network engineering SE.

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configure outgoing ipv6 with systemd-networkd

I have the following systemd-network config and want to set the outgoing ipv6 address: [Match] MACAddress=aa:bb:cc:dd:ee:ff [Network] DNS=2001:4860:4860::8888 DNS=2001:4860:4860::8844 Gateway=2a01:...
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macOS: Ping no response but ping6 working

I have a MacBook Pro 2015 running on macOS BigSur 11.1. The device is connected via wireless-lan to my router. The network is working with ipv4 and ipv6. The MacBook gets an ipv4 and an ipv6 address. ...
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Can I route DHCPv6 and Router-Advertisements through another router?

I have a dual router setup (two routers behind each other) and I want to get IPv6 working on my Local Network. ISP <-> Router_1 (Vodafone Station) <-> Router_2 (Unifi USG) <-> Local ...
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How to find temporary IPv6 addresses in Windows 10

I recently entered Ipconfig /all into my cmnd prompt to find something. Upon doing that I noticed that I don't have a LAN connected and I cant find my Temporary IPv6. Can anyone help figure how or why ...
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How does IPv6 DNS resolution work in a local network

I have a dualstack private network. My router is DHCP and DNS Server. All client IPv4 addresses are registered and can be queried by DNS as expected as their hostnames are registered with DHCP. Now ...
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How to enable outgoing IPv6 traffic on Google Compute Engine VMs?

In order to test the accessibility and inaccessibility of my home network from the outside world I'm using Google Cloud Platform VMs with Debian 10. In ifconfig I'm seeing one internface with an IPv4 ...
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Why might someone be denied access to my website from a mobile hotspot?

Full disclosure: I asked this question on "Network Engineering" and it was quickly closed as off-topic and the moderator sent me here. Recently, I started self-hosting my academic webpage ...
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How to enable IPv6 on an interface but disable IPv6 ND traffic

For an experiment, I am trying to disable IPv6 traffic on an interface as they cause packet-noise. I'm trying to have 0 packets generated by the interface but have IPV6 addresses configurable on it. ...
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How often are link-local IPv6 addresses renewed by Windows 10? Do they contain any “network prefix”?

How often are IPv6 addresses renewed by Windows 10? I am talking about link local addresses; not temporary random addresses. Should it, and does it contain a network ID prefix, which is used by ...
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IPv6 accessibility and Hitron Router

For my Hitron CODA-4582U Router, this is the best I can find and come up with - However, trying to connect from internet failed: Immediate connect fail for 2607:9880:3627:ffa4:92b1:xx:xx:681f: ...
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IPv6 on Linksys Velop, small issue

I have set my router to automatic IPv6 but it doesn't seem to work on IPv6-test.com. When I type ipconfig in cmd prompt (administrator) I get the IPv6 address starting with fe80 (and it's mentioned as ...
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Windows drops IPv6 periodically after ghost network packet

So this one haunts me for quite some time now, and I hope someone might be able to shed some light on the problem. My computer is connected to a IPv6 managed network. After a reboot it'll get an IPv6 ...
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No ping6 btween devices, 6lowpan network with raspberry pi

I am trying to make a 6lowpan network with raspberry pi device(s) and embedded systems. I enabled bluetooth_6lowpan (modprobe bluetooth_6lowpan and echo 1 > /sys/kernel/debug/bluetooth/...
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Enable IPv6 on Asus router rt-ac1200G+ on 3g dongle connection

My internet provider enabled IPv6 on a 3G mobile network which I use with a Huawei E180 dongle connected in USB of Asus rt-ac1200g+ router. If the sim card is used in a mobile phone IPv6 is enabled by ...
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How to set up a 6to4 tunnel on windows

There are 6to4 tunnel services like http://tb.netassist.ua/ or https://tunnelbroker.net/ but how can i set up those on windows? if I run the script (for example from netassist): netsh interface teredo ...
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MacOS: With enabled IPv6 ping fails to resolve IPv4 hostname but nslookup succeeds

My local DNS server registers DHCP hostnames so I can easily access my machines. I also have native IPv6 from my ISP and it's enabled and being used. The issue: "ssh hostname" or "ping ...
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Multiple different IPv6 WAN addresses same time

this is my first post, so be gentle with me for sometimes not using the correct terminology. I am using a Fibre ISP with CG-NAT (DS-Lite). I connect via IPv6 Prefix Delegation with a /56 address space....
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Configuring router to assign static IPv6 addresses on the LAN, using an ISP-provided static /48 IPv6 network?

My ISP provides me with a "static /48-IPv6 network". I'd like to assign some "static" (as in out-living router/machine restarts) IPv6 addresses to machines behind that router so ...
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How to configure Windows 10 to use static IPv4 address and SLAAC together?

I want to configure a Windows 10 VM to use manually-assigned static IPv4 address, but acquire an IPv6 address with SLAAC. It's a virtual server cluster and all other Linux hosts are set up as expected,...
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IPv6 on Android with DHCPv6-based ISP

My ISP assigns IPv6 prefixes using DHCPv6. I know Android only supports SLAAC. Is there any way I can configure my router to provide Android devices with IPv6 Internet connectivity?
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How to use IPv6 internet addresses on Linux with systemd-networkd

I have a problem with my providers internet router using IPv6 addresses and I realized that I do not really understand how to use IPv6 addresses. To get an idea I like to ask how to use the different ...
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Broken webapp: need to disable ipv6 (i.e. use ipv4 only) for a specific host

I'm need to use a specific webapp developed by a small company. The webapp uses IP whitelisting. However, there's a problem with that feature: ipv6 is not working. They don't know how to fix it and ...
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Are local IP addresses on home routers always IPv4?

What the title says. I want to know whether I can assume all internal IP addresses supplied by a regular home router will be IPv4 or might they be IPv6 as well?
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IPv6 consistently slower on my network

This is more of a theoretical question than a practical one, but my ISP gives me a dynamic IPv4 address and a /56 IPv6 prefix. When running bandwidth checking tools, I see that I consistently get a 2-...
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Two NICs, One Subnet — Linux appears to be primarily transmitting on one NIC, and primarily receiving on the other NIC. How?

I recently pulled some hardware out of storage and put together a fileserver and for whatever reason, the motherboard has two gigabit NICs on it. Since I was tinkering, I figured I might as well plug ...
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Using IPv6 leads to “suspicious traffic” page when using Google Search

I have configured IPv6 tunnel provided by https://tunnelbroker.net/ on my router. IPv6 is working perfectly, but now I have another problem: when I try using http://google.com/ it says that suspicious ...
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WIFI Working but ethernet is not

Recently my ethernet connection stopped working. Didn't notice for a while because Wifi continued to work. Basically I keep getting 'unidentified network' doesn't have valid IP configuration. Tried ...
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How to forward UDP traffic from IPv4 to IPv6?

I have a local Server that only has an IPv6 Adress on which i want to host a Minecraft Server for my friends and myself. The Problem is that some of them don't have an v6 adress. I am currently using ...
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Circumvent DS-Lite restrictions to allow incoming IPv4 request on single port

I have recently moved, and my new ISP provides a DS-lite/carrier-NAT connection so that I do not have my 'own' IPv4 address but I'm pooled with many other people behind a single IPv4 address. As a ...
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A possibility of a bridge network in sending ip4 pings by adding wlan0 to br0

So I have a wifi chip connected to an application processor running linux, that's currently configured to be running wpa supplicant, and I see wlan0 interface has an ipv6. wlan0 Link encap:...
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IPv6 Network Design in 2021

I administer a couple of small networks with 10-20 machines on each (physical machines + VMs). Each network has a cable or DSL modem coming in, and I have one or two routers that I use internally to ...
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The same ipv6 prefix of router and PC, how does the ISP's router send the package to my PC?

There is a ipv6 address whose prefix length is 64 on my router. The DHCPv6 mode of router is hybrid. The ipv6 prefix length length is 64 too on my PC under the router. router eth0 2001:2:3:4:...
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Running a server with an ipv6 only ISP

I am running a simple gaming server using my local network and my ISP only supplies an IPV6 address, using a ddns service to portforward. From what I've read, I need a 4in6 tunneling service but I ...
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Suppress usage of IPv6 interface identifier address during CentOS kickstart installation

While working on an automatic CentOS kickstart installation in a high security IPv6 only environment i discovered that the kickstart file, .treeinfo and squashfs are sometimes downloaded using the ...
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IPv6 Web Server Traffic Not Resolving

My ISP switched to IPv6 addresses this year and I'm now having trouble setting up a web server on my network. It's Apache on Ubuntu 18.04 and my DNS hosting is w/ GoDaddy. I'm able to run a successful ...
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First time setup of OpenVPN, cannot connect. Network is Unreachable. PiVPN

So i got an orange pi pc running armbian with pivpn/ openvpn with ethernet connected to my router. i have spent the last few days trying and researching on how to setup everything but i cannot get the ...
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MPIO and ESXi 7.0 standalone

I'm trying to setup MPIO between ESXi 7.0 standalone (free license) and a SCST server. I created 4 vmknics (vmk1,vmk2,vmk3,vmk4) with IPv6 addresses (2001::1/64,2002::1/64,2003::1/64,2004::1/64) and I ...
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Do I need to enable IPv6 for a service running in a docker container on a local network?

I'm running a DNS server on my home network. The service runs within a Docker container which, by default, has IPv6 disabled. My network otherwise does have IPv6 enabled. However, Docker does require ...
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How do I access a IPv4 web server outside my LAN via IPv6 network

I am new to IPv6 Networking. Some background: I have CCTV NVR which is only IPv4 compatible. And my ISP is only IPv6 compatible. When on my local network I can access my NVR using 192.168.1.9. Now my ...
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What does column Ref mean in `route -6` routing table output?

I'm learning about routing in IPv6 but couldn't make sense of the output column Ref in route -6. The manual entry doesn't enlighten me Ref Number of references to this route. (Not used in the Linux ...
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on windows 10, how to make sites use only ipv6, and block ipv4

sites say that blocking ipv4 is at os level and not browser level when you go to sites, use only ipv6 steps?
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Does IPv6 link local address as default gateway break forwarding?

I have a Linux machine with two Ethernet interfaces and one is connected to VDSL over converter. The PPPoE connection works fine, but routing doesn't work. I've set the proper kernel config parameters:...
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What should I add to hosts file to be able to access an http server that binds only on ipv6 address?

I have setup a rocketchat server on docker. It binds only to ipv6. To verify that I can access it, I use: //NOTE: xyzf is just a replacement $> nc fe80::ba27:ebff:fe2a:xyzf%eth0 3000 GET / and ...
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Is it viable to have IPv6-only home mail server in 2020?

I am considering running a mail server at home for a low-traffic, private email address. Since public IP is unavailable/costly and I do have IPv6 range assigned, I've been thinking whether it's now ...
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Setup DNSMasq as caching DNS server and DHCP for local network for IPV6 with a seperate router/gateway

I have setup a home network on which I have been running my DNSMasq IPV4 caching DNS server for a few years. It is not the router/gateway and I want to add support for IPV6 and what I think I ...
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Disable IPv6 in QEmu

Is there a way to stop QEmu from providing IPv6 connectivity to the guest by giving command line options to qemu-system-* while still keeping IPv4?
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What are AI_V4MAPPED addresses used for?

I found an odd network configuration on an old RHEL 5.8, hosting an Oracle DBMS. The line I don't understand is the one concerning the address:port ::ffff:127.0.1.1:1521. I never saw that before. I ...
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How can I verify rabaseddnsconfig is disabled?

I followed the workaround https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2020-16898 and disable rabaseddnsconfig. How can I verify that it is disabled?
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how to setup IPv6 ULA advertisement and -DHCPv6 in home network?

I am on ArchLinux, and I am running IPv6 in my local home network. IPv6-Internet comes with my fritz.box and works well with all clients. On my home server, I set up radvd to advertise my local ULA ...
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Stateful DHCPv6 and a change of prefix?

Some of my devices require Stateful DHCPv6. They do not leverage SLAAC to determine their IPv6 address. Go figure! Consequently, I tried a Stateful DHCPv6 Server. However, my IPv6 prefix changes each ...

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