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h1. Routage

h2. Etape pour un changement d'adresse ipv6 sans indisponibilité temporaire:

  * mettre les deux addresses dans /etc/network/interface (ou similaire)

  * mettre que la nouvelle adresse dans votre zone DNS

  * si serveur mail/web mettre l'ancienne et la nouvelle adresse dans le fichier /etc/hosts

  * si serveur de mail, mettre à jour les ips du domain local (ie: mynetworks pour postfix)

On attends ensuite quelque jours que le DNS ce propage, puis.

  * Virer la vielle addresse de partout.

h2. Routage

Coté Adhérent-e :

<pre>

# IPv4 Adherent

ip addr add IP/32 dev eth0

ip route add default via 91.224.148.0 dev eth0 onlink

# IPv6 adherent

ip -6 addr add fe80::XX:YY/64 dev eth0

ip -6 route add default via fe80::31 dev eth0

ip -6 addr add IP/NN...

</pre>

Et coté routeur :

<pre>

# IPv4 routeur

ip addr add 91.224.148.0/32 dev lo 

ip route add IP/32 dev eth0.NNN

# IPv6 routeur

ip -6 addr add fe80::31/64 dev eth0.NNN

ip route add IP/56 vi fe80:XX:YY dev eth0.NNN

</pre>

h2. Adressage

<pre>

PA 2a01:6600:8000::/40 LIR fullsave

2a01:6600:8080:HH00::/56 => 91.224.148.DDD  fe80::80:HH PI tetaneutral.net

2a01:6600:8081:HH00::/56 => 91.224.149.DDD  fe80::81:HH PI tetaneutral.net

2a01:6600:8082:HH00::/56 => 80.67.182.DDD   fe80::82:HH PA gitoyen

2a01:6600:8083:HH00::/56 => 89.234.156.DDD  fe80::83:HH PA opdop

2a01:6600:8084:HH00::/56 => 89.234.157.DDD  fe80::84:HH PA opdop

2a01:6600:8085:HH00::/56 => 185.119.168.DDD fe80::85:HH PA tetaneutral.net

2a01:6600:8085:HH00::/56 => 185.119.169.DDD fe80::86:HH PA tetaneutral.net

2a01:6600:8085:HH00::/56 => 185.119.170.DDD fe80::87:HH PA tetaneutral.net

2a01:6600:8085:HH00::/56 => 185.119.171.DDD fe80::88:HH PA tetaneutral.net

PA 2a03:7220::/32 LIR tetaneutral.net

2a03:7220:8080:HH00::/56 => 91.224.148.DDD fe80::80:HH

...

</pre>

h2. Migration

<pre>

91.224.149.DDD/24 gw 91.224.149.254

=>

91.224.149.DDD/32 gw 91.224.148.0 onlink

</pre>

Sur VM

<pre>

# cat /etc/network/interfaces

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet6 static

    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.accept_ra=0

    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.autoconf=0

    up ip addr add fe80::YY:XX/64 dev eth0

    address 2a01:6600:80YY:XX00::1

    netmask 56

    gateway fe80::31

iface eth0 inet manual

    up ip link set eth0 up

    down ip link set eth0 down

    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.accept_ra=0

    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.autoconf=0

    up ip addr add 91.224.148.DDD/32 dev eth0

    up ip route add 91.224.148.0/32 dev eth0

    up ip route add default via 91.224.148.0

    down ip route flush dev eth0

    down ip addr flush dev eth0

</pre>

h2: Configuration openstack/bird:

openstack ttnn route update <VM_NAME>

VM ipv6 only DNS 2a01:6600:8081:ffff:: et 2a01:6600:8081:ffff::2