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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Radvd runs on vlan(tagged interface) provide multiple ipv6 address for the host

On IPv6 SLAAC, run radvd in the tagged interface(eg: enp2s0.300), then the host vlan interface got multiple IPv6 address, but it's scopes are different. In the case of untagged interfaces(eg: enp2s0),...
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Confused with radvd RA message

On my Linux device, I am using radvd to send RA messages. I config one prefix in its config file (also assigned the correct address to my outgoing NIC). But RA message sent out contains, beside the ...
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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: ...
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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 ...
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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 { ...
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569 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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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448 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 { ...
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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&...
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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 ...
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876 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 ...
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761 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 ...
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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 ...
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663 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....
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501 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 ...
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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 ...
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1answer
6k 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 | +---------...
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11k 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 ...
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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 ...
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857 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 ...
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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 ---+--...
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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 ...
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16k 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 ...
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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 ...
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299 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 ...
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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:...
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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 ...