Openwrt disable ipv6 uci

OpenWrt news, tools, tips and discussion. If you're posting with a support issue, include as much info as possible, such as a precise description of the problem, what hardware and OS build you have, and the troubleshooting you have tried.

Does this sidebar need an addition or correction? Tell me here. No IPv6 Route self. I've been having some trouble trying to configure my router to use IPv6 properly. My setup is currently this:. I have tried various combinations of settings in the WAN and LAN interfaces on the router to try and fix this but get different errors from no route on the desktop, to unknown error 5or the above no route error, to just straight up packet loss.

I've obfuscated them where possible. It's basically the same as in v4. Where you use The automated way of doing this is to make a DHCPv6-PD request to the upstream router, otherwise it needs a static route configured. I have no idea if Sky's thing can do either of those.

Also, you seem to have the same v6 address 2a : : on two different machines, and one of those machines has the same address on two interfaces.

That's not going to work very well. All machines need unique addresses and all networks need unique, non-clashing ranges. If you must NAT, it should be done once at the edge. It's a bit more annoying to avoid in v4 though due to the lack of PD equivalent, and the extra breakage from double-NATing is less noticable since nobody expects v4 to work right these days anyway. I'm getting confused with all of the configuration options in the Interfaces section.

I've tried different combinations of values in these, but none seem to work:. To get that, you either do a DHCPv6-PD request which should be the default, so everything ought to happen automatically? It's entirely possible the Sky router doesn't support downstream DHCPv6-PD or static routes, in which case you'll need to replace it with something that's less useless. Did you ever figure this one out? So I ended up with NAT6 following this guide.

That almost worked, but I had to follow this as well. Use of this site constitutes acceptance of our User Agreement and Privacy Policy. All rights reserved. Want to join? Log in or sign up in seconds.

The UCI system

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Post a comment! Create an account.Also, the default installation of the web interface includes the package luci-proto-ipv6required to configure IPv6 from the luci web interface.

If you are making a custom build please note that the packages stated above must be installed to provide the corresponding IPv6 functionality. Our aim is to follow RFC where possible. Please notify us if you find any standard violations. The following requirements of RFC are currently known not to be met:.

The following sections describe the configuration of IPv6 connections to your ISP or an upstream router. Please note that most tunneling mechanisms like 6in4, 6rd and 6to4 may not work behind a NAT -router. For an uplink with native IPv6 -connectivity you can use the following example configuration. PPP-based protocols - for example pppoe and pppoa - require that option ipv6 is specified in the parent config interface wan section. See WAN interface protocols.

openwrt disable ipv6 uci

Further configuration options, if required, can be given in the config interface wan6 section. Note: In order to successfully send and receive DHCPv6 solicitation and advertisement messages between wan6 and the PPP-based adapter you will need to enable firewall rules for the WAN zone containing these two interfaces:.

Static configuration of the IPv6 uplink is supported as well. The following example demonstrates this. OpenWrt provides a flexible local prefix delegation mechanism. It can be tuned for each downstream-interface individually with 3 parameters which are all optional:.

In this case the system will first try to assign a prefix with the same length but different subprefix-ID. If this fails as well the prefix length is reduced until the assignment can be satisfied. If ip6hint is not set an arbitrary ID will be chosen. If the ip6hint is not suitable for the given ip6assign it will be rounded down to the nearest possible value. If ip6class is not set then all prefix classes are accepted on this interface.Use this to quickly jump to a section.

There are scenarios in which an outgoing VPN connection from a router is quite useful. Some examples:. An outgoing VPN offers some protection in these scenarios. All risky devices can be put in a separate network segment and given only access to the Internet through the VPN connection. By working transparently through a VPN, neither the device nor the servers it connects to will know the IP address of the internet connection. Correct configuration of the VPN connection is critical in this.

Without it, these devices cannot reach the Internet at all. Configuring a network like this prevents information leakage through the direct internet connection. From the perspective of the device, it might as well be in the data center of a VPN provider. The figure below provides an overview. Central in the figure and in the design is the OpenWRT router. It has multiple functions in addition to what routers regularly do:. A bit of storage will be needed.

Installing all of the above packages requires around KB.

Wireless Access Point / Dumb Access Point / Dumb AP

To save some space, only install the needed VPN packages. Although the ip command from Busybox integrated in default OpenWRT installations is sufficient for forwarding IPv4 traffic, it will fail to mark network routes as being as static. This is not a dealbreaker, but it is quite ugly since it will be harder to make a distinction between dynamically created routes and static routes.

openwrt disable ipv6 uci

The ip command in the ip-tiny package allows this. It is also a prerequisite for adding IPv6 support, a subject discussed later. Throughout this guide steps to configure OpenWRT both through the web-interface and through the command line will be given. Note that these commands might have to be adjusted to specific router models and configurations. If you have not done so already, create a guest network in its own VLAN.In experience to get a proper working multiple wan configuration using mwan3 starting from scratch you should:.

Important: this works well on OpenWRT First of all: Activate conntrack, docs says that is important and neccesary to get MWAN3 work properly, and it is needed to reboot:. Does this mean that if WAN has masquerading enabled already, there is no action needed for this section? Or just a statement "still works like described above". How do metrics work when you have IPv6 and IPv4? Skip to content. Instantly share code, notes, and snippets. Code Revisions 12 Stars 26 Forks 2. Embed What would you like to do?

Embed Embed this gist in your website. Share Copy sharable link for this gist. Learn more about clone URLs. Download ZIP. In experience to get a proper working multiple wan configuration using mwan3 starting from scratch you should: Important: this works well on OpenWRT This comment has been minimized. Sign in to view. Copy link Quote reply. Could you add config for OpenWrt Sorry for delay, gaia exactly.

Sign up for free to join this conversation on GitHub.However, there are some trick and catch. However, it has been quite a sarcasm that a bro named trevorj removed the very link back to this post in the Credits section. Good Job! Barrier Breaker uses a newer Linux kernel and there is indeed a package named kmod-ipt-nat6 in the repository.

Sorry, my fault, got confused with the script in Openwrt Wiki. As far as I can explain, the more specific route allows to explicitly direct packets to given interface. There is a simple protocol that can make this work, called bridging. You are right and there is actually a post here I wrote before using bridge method for earlier version of OpenWRT. However, later version of OpenWRT no longer supports table broute in ebtables in its kernel by default so that NAT is thus brought out again.

Actually broute support is in the Chaos Calmer v I got it working yesterday, and have posted an OpenWRT specific version of a v6broute script to github. I confirmed as just I tested broute support in Chaos Calmer. I will update that old post regarding this information.

Without executing this command, NAT not works. But after executing this, NAT works. But without this, Pinging from downstream fail. Actually I do not have solid explanation on this. Once I read linux.

But it really works now with chmod. And thank you for your work. So sorry.

Comfast CF-EW71 OpenWRT Firmware / how to disable dhcp in Openwrt

Followed the steps you gave again and it works like a charm. It might have been effected by the configuration on DHCPv6.

VPN as WAN for guest network on OpenWRT

And thank you for your great work again. If you scrolled up a little bit to this commentyou will find my guess on DHCPv6 there. I did that first, and while it works for most of my client devices, others would still prefer the IPv4 route instead. Another change I made was to the sleep time. I found that on my device, a delay of 5 seconds is enough meaning IPv6 is up after that time and the while loop only executes once.

But that certainly depends on your hardware and other software you may run on your router. Really glad that it works. I also read through your forum posts.

It has been expanded in such detail that I believe it is of great help regarding this method. For the while loop, I set the sleep time a bit longer because just in case that the router fails to obtain IPv6 address it will not eat much CPU when looping. About the while loop: Meanwhile I actually changed that a bit further in order to not loop infinitely.

openwrt disable ipv6 uci

The way I have it now, the while loop exits the script if no IPv6 route is found within two minutes. Your email address will not be published. Don't subscribe All Replies to my comments Notify me of followup comments via e-mail.

You can also subscribe without commenting. After all done, a reboot is required. The catch is that it gets all pros and cons that NAT has.This doesn't suprise me, but nonetheless I don't personally have the hardware to confirm.

First, log into the web interface on the EAP If it is already "On", skip this step. Telnet into the device and login with your web credentials. Instead of typing in any of the commands from the menu, type in the magic command 1d68d24ea0d9bb6ef1b93 and press enter. You should then be at a root shell:. Before we can enable dropbear the SSH server that is included in the EAP firmwarewe need to generate our host keys.

You can do that by copying and pasting the following lines into the root shell and pressing enter:. You can either edit this file with vi or you can do the following steps:. Enabling the dropbear service, so that it will start automatically after every boot, is as easy as typing in the following command:.

At this point we should reboot so that we can verify that everything is working as expected. This can take a minute or two. Just start pinging the device until it starts responding, then wait another minute or two for dropbear to get started. To reboot, just type reboot into the command line and press enter. Now that you've got SSH up and running, lets take a few moments to make sure that we lock down the security of the device.

Because of that, we can use the uci command to turn off password authentication for dropbear:. After doing this, it is a good idea to verify that it is indeed working as expected.

We can do this pretty easily by trying to log into the device using the admin accountwhich by default has the password To check that password authentication is indeed disabled, you simply log out of the root shell and then try to logging back into the device as the user admin :. You shouldn't even get a password prompt, it should just say Permission denied publickey. If you do get a password prompt, type in and press enter.The initialization scripts do a few things to protect flash ROM.

Open a terminal window.

openwrt disable ipv6 uci

You can also disable IPv6 for a particular network adapter. This post will help you configuring IPv6 connectivity on an Openwrt router connected behind a Freebox modem. As I couldn't remember the default settings I tried to figure which files those settings go to and recover the defaults from the factory snapshot.

DNS and DHCP configuration examples

You can remove the ULA prefix from the Interfaces page. It seems that on openwrt It is not recommended to manually mess around with these sort of settings, but it is very useful for some specific use cases, as it allows you to set specific options to DHCP clients. The main components are Linux, util-linux, musl, and BusyBox. I'm trying to suppress all IPv6 related things.

An initial delay in seconds helps to avoid looking for the IPv6 network too early. Disabling IPV6, yep that old Chestnut again.

Here's the magic shell commands that turn it off for the lan and wan interfaces if you have other interfaces, you'll want to adapt this for yourself. Normally i would disable ipv6 for guest.

I am new to OpenWrt and keep learning as well. Thank you for your hard work and dedication for making a network world much safer place for everyone. The steps mentioned here should work on previous versions of Debian such as Debian 9 and 8, also, Ubuntu versions such as Ubuntu First of all, install kmod-ipt-nat6 and then do some tweaks.

If you only got an IPv6 address and not an IPv4 address also then this is your problem. Open up the file with the text editor of your choice as super user, then go to the end and add the two extra lines listed below, that's all.


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