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== Network configuration ==
 
== Network configuration ==
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Bender is globally accessible through public, static IPv4 as well as
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Develer has a 10mbit up/downlink and asks to limit bandwidth usage from hosted services.
an IPv6 /64 subnet (6to4).
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There is a traffic shaper, but it may have trouble shaping 6to4 traffic.
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Bender is globally accessible through public, static IPv4 as well as the 6to4 subnet associated
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to it: 2002:5395:9edc::/48.
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The tun6to4 interface on bender is assigned the globally visible address 2002:5395:9edc::1.
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The subnet 2002:5395:9edc:1::/64 of our 6to4 net is assigned to the bridge virbr0, which binds together
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several virtual interfaces connected to the libvirt guests. With this network setup, IPv6 routing works
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naturally, without the need to add any special routing rules on bender.
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The virbr0 bridge is created by libvirt on startup with <code>/etc/libvirt/qemu/networks/default.xml</code>.
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Libvirt does not yet support assigning IPv6 addresses to bridges, therefore we do this in <code>/etc/rc.local</code>:
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ip addr add 2002:5395:9edc:1::1/64 dev virbr0
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To automatically configure network and on the gursts, Bender also runs radvd, the IPv6 Routing Advertisement
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daemon. The contents of <code>/etc/radvd.conf</code> are:
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interface virbr0
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{
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        IgnoreIfMissing on;
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        AdvSendAdvert on;
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        MinRtrAdvInterval 30;
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        MaxRtrAdvInterval 100;
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        AdvDefaultPreference low;
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        AdvHomeAgentFlag off;
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        #bernie: subnet 1 of our /48 6to4 on Develer Consiagnet
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        prefix 2002:5395:9edc:1::1/64
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        {
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                AdvOnLink on;
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                AdvAutonomous on;
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        };
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};
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Guests simply need to be configured to accept IPv6 routing advertisements. The DNS must be assigned manually.
   −
Develer has a 10mbit up/downlink and asks to limit bandwidth usage from hosted services.
  −
There is a traffic shaper, but it may have trouble shaping IPv6 connections.
      
== Hosted VMs ==
 
== Hosted VMs ==

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