Questions tagged [radvd]

The router advertisement daemon (radvd) is run by Linux or BSD systems acting as IPv6 routers. It sends Router Advertisement messages, specified by RFC 2461, to a local Ethernet LAN periodically and when requested by a node sending a Router Solicitation message. These messages are required for IPv6 stateless autoconfiguration.

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Why use DHCPv6 over Stateless Address Autoconfiguration?

IPv6 and RFC 2462 provide a means for hosts to configure their own IP addresses via stateless address autoconfiguration. To me this seems like the bee's knees, and it leaves me wondering why someone ...
Jeff's user avatar
  • 358
12 votes
2 answers
1k views

Why is my domain controller causing my router to send advertisements for Unique Local Addresses?

I'm currently evaluating Server 2012 to serve as a domain controller in a small heterogeneous network of Linux and Windows workstations and servers, all of which would eventually be joined to the ...
Michael Hampton's user avatar
11 votes
1 answer
672 views

Can clients learn their time zone on a network configured using RA?

I found that there are some clients which when they are on an IPv4 network learn their current time zone through DHCP option number 101. On an IPv6-only network where an IP prefix is advertised by ...
kasperd's user avatar
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11 votes
3 answers
36k views

How to configure radvd, dhcpd6, routing and /64 subnet based on delegated prefix by DHCPv6-PD server?

My ISP has just started IPv4/IPv6 dual stack service. In order to connect IPv4/IPv6 internet, almost all users usually use a CPE leased by the ISP. But I want to use my Linux router instead of such ...
takaomag's user avatar
  • 261
7 votes
1 answer
9k views

Advertise a subnet route with radvd

we have set up a small IPv6 Testing network. The setup looks like this: ::/0 +----------+ | Firewall | Router to the public net +----------+ | 2001:...::/106 | +---------...
Thomas Berger's user avatar
5 votes
1 answer
3k views

KVM virtual machines cannot reach IPv6 web sites

I have a freshly installed Windows Server 2008 R2 SP1 virtual machine which is completely unable to reach any IPv6 web pages, despite apparently having proper IPv6 connectivity. In addition, other ...
Michael Hampton's user avatar
5 votes
2 answers
1k views

IPv6: using a link mtu greater than the mtu of the default route

When configuring an IPv6 LAN it may be desirable to use router advertisements to announce a link MTU of either the standard 1500 bytes or something larger to enable usage of jumbo frames, perhaps 9000....
Jonathan Swinney's user avatar
5 votes
0 answers
2k views

How to get /64 as prefix length when using DHCPv6 and radvd?

For our networking course we were asked to set up a DHCPv6 server in a virtual machine. I choose to work on a virtual machine(on VMware) running Ubuntu Desktop 16.04 and Lubuntu 14.04 as test client ...
Jugurtha's user avatar
3 votes
2 answers
2k views

Multiple IPv6 routers in a local network

I'm setting up some servers that will run virtual machines using IPv6. The network topology is something like this, where the br0 interfaces are virtual: 2001:db8:fedc:aaaa::/64 ---+--...
Andre's user avatar
  • 181
3 votes
1 answer
1k views

Advertise self as ipv6 dns server, with ra-pd / radvd

I use prefix delegation to set up stateless IPv6 on my local network. On my router, my RADVD setup looks like this: $ cat /etc/radvd.conf interface lan { AdvSendAdvert on; prefix ::/64 { }; ...
Nicolas Dumazet's user avatar
2 votes
3 answers
16k views

IPv6 hosts configure default route with router's link-local address

I have recently added IPv6 to our network as per the instructions at http://www.chronos-tachyon.net/reference/debian-ipv6-and-hurricane-electric. However, the hosts on the network automatically ...
DanielGibbs's user avatar
2 votes
1 answer
1k views

IPv6 radvd with vlans

Is it possible to configure the radvd config so that the router advertisement packets got a VLAN- tag? Theres a switch between my Router (software router, Ubuntu OS) and I only want some VLANs to ...
mushr00mer1990's user avatar
2 votes
6 answers
23k views

How to remove autoconfigured IPv6 Addresses in Windows 7/2008?

I'm in the process of exploring IPv6 deployment in my network. I've changed the advertised subnet and now my windows PCs have IPs from the new and the old network. I was able to reset the adapter by ...
David Schmitt's user avatar
2 votes
2 answers
4k views

Multiple IPv6 routers on the same network

I have two ISPs for my home network. They are connected to two separate routers. If I run radvd and dhcpd on both routers at the same time, I get no IPv6 connectivity. My IPv6 connectivity only works ...
Fufu Fang's user avatar
2 votes
1 answer
2k views

DHCPCD does not delegate an assigned IPv6 prefix

I've been trying to get IPv6 PD with dhcpcd working on my home server along with ppp and radvd to allow for SLAAC to work and eventually replace my ISP-provided router. Unfortunately, the prefix which ...
Marcus K's user avatar
2 votes
4 answers
3k views

Can a Linux router autoconfigure IPv6 if radvd is running on the same host?

I have a linux gateway router running a 6to4 tunnel and using radvd to broadcast an IPv6 prefix on the local subnet. Radvd can be configured to automatically pick up the network prefix from the 6to4 ...
loganb's user avatar
  • 141
2 votes
0 answers
68 views

Multiple global IPv6 prefixes

I'm planning an IPv6 mesh-network with multiple gateways (routers to the internet). The connection between the gateways is not that great. The plan is that every gateway should announce two prefixes: ...
margau's user avatar
  • 51
2 votes
0 answers
1k views

Route single IPv6 address using router advertisement

I have a server in my local network that connects to an external VPN server and gets assigned the public IP address 2a02:c200:1:10:3:0:4315:2. Currently, when other computers in my local network ...
cdauth's user avatar
  • 993
1 vote
2 answers
2k views

Simple stateful DHCPv6 using ISC DHCP and RADVD. Doesnt work?

I'm trying to set a simple ipv6 network using ISC DHCPv6 on a linux machine. Here is my dhcpd6.conf: subnet6 beef:fade::/112 { max-lease-time 3600; range6 beef:fade::100 beef:fade::fffe; } The ...
carloslockward's user avatar
1 vote
1 answer
1k views

How to start with IPv6 subnetting on linux gateway

We are currently having perfectly working IPv4 network with a typical layout - internal network with all servers splitted to VLANs in 10.0.0.0/8 (each vlan is /24) and external network with public ip ...
Yarik Dot's user avatar
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1 vote
2 answers
5k views

OpenVPN IPV6 Tunnel Radvd

I have an interesting question regarding ipv6 + openvpn.. My Version is OpenVPN 2.1.1 i have been given 2 native /64 ipv6 networks ( Block1 -> 2a01:abc:123:deac::/64 ) ( Block2 -> 2a01:abc:123:...
Arenstar's user avatar
  • 3,612
1 vote
1 answer
3k views

Native IPv6: routing between eth0 and eth1

I humbly ask for your assistance with the problem I can't resolve myself. I have a native IPv6 link with 2001:db8:14::/48 assigned. I'm running Slackware on 3.2.50-grsec kernel. My ISP's side (my ...
Mark's user avatar
  • 11
1 vote
2 answers
1k views

Is there any way to programmatically add prefixes to radvd without writing to radvd.conf and restarting it?

I need to create prefix entries on demand to configure a quite large IPv6 net. What I'm doing now is: stop radvd write to radvd.conf restarting radvd But this is quite painful. I wonder if there is ...
ssedano's user avatar
  • 214
1 vote
0 answers
466 views

IPv6 radvd advise static IP as gateway?

I am running radvd (2.17-2, Debian Buster) on a local network to provide IPv6 access. I would like to make radvd advertise the static IP of the interface (e.g. 2001::1/64) as the gateway IP instead of ...
iBug's user avatar
  • 1,308
1 vote
0 answers
40 views

Fedora client persist old address after router advertisement

I have a linux-based DSL router, running radvd Because the prefix from my ISP may change, so I have to change the radvd.conf when prefix changes. For example, like this. interface br-lan { ...
maybeonly's user avatar
1 vote
0 answers
816 views

radvd dynamic global prefix subnetting

Hi my plan is to make two local ipv6 subnets. But i don't have an static global prefix. I know i can use ::/64 in radvd.conf. but how to tell radvd to add an subnet after the global prefix somthing ...
ChristinWilling's user avatar
1 vote
0 answers
981 views

Radvd sending advertisement to the wrong interface

I have the following radvd.conf file: interface eth0 { AdvSendAdvert on; MinRtrAdvInterval 30; MaxRtrAdvInterval 100; route 2000:e000:0:2::/64 { ...
Miguelxpn's user avatar
1 vote
0 answers
747 views

Ubuntu Router to connect two networks via IPv6

I am currently in the situation that I want to add one network of homogenous linux nodes to an already existing windows network. For administrative reasons the linux nodes are not going to be added to ...
bayer's user avatar
  • 111
1 vote
1 answer
356 views

Create router in Debian passing along ipv6 if available

I need to create a router that will make ipv6 available to downstream users if it is available. I have encountered two problems using the "naive" approach: 1) I am receiving a /64 address from ...
Artie Gold's user avatar
0 votes
1 answer
9k views

Setting up stateful DHCPv6 on Linux

I want to set up a DHCP server on my local network for IPv6 that issues addresses and further information like DNS/NTP and so on. From my ISP I got the IPv6 Prefix which I will refer to as <prefix&...
fragwürdig's user avatar
0 votes
1 answer
338 views

Use the locally published RA route for routing

I have a Linux machine, working as a router, that has radvd configured. I have set up some basic configuration like the following: interface wpan0 { AdvSendAdvert on; prefix 2001:db8:200::/64 ...
MariusSiuram's user avatar
0 votes
0 answers
338 views

Accessing docker-compose containers via ipv6 from the outside of the docker host

I have the following (simplified) docker(-compose) setup and would like access the nginx container from the laptop. A ping from the laptop to the docker-compose gateway (fd..2222.0.0.1/80) works fine ...
milkpirate's user avatar
0 votes
1 answer
289 views

Dynamic router advertising on IPv6

I have a problem that I'm hoping I can solve with IPv6 but since I haven't had a chance to try it yet I thought I'd propose my solution here. My problem is that we have a LAN with a number of devices ...
parsley72's user avatar
  • 224
0 votes
0 answers
535 views

Ubuntu 14.04 IPv6 setup with radvd and ufw

I am bringing up a rack of server is a co-hosting location and so far I have been using it with IPv4 and using NAT for the in-rack network. I want to add IPv6 so that I can address all the processors ...
AlanObject's user avatar
0 votes
1 answer
879 views

Vyatta 6.2 IPv6 DNS handout

I have a Vyatta server which I have connected to Hurricane Electric. I have setup the RADVD on the box and my LAN clients get a public global IPv6 address and route through the Vyatta box. Where do I ...
justacodemonkey's user avatar