|Linux IPv6 HOWTO (en)|
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Following information was contributed by Stephane Bortzmeyer <bortzmeyer at nic dot fr>
Be sure that IPv6 is loaded, either because it is compiled into the kernel or because the module is loaded. For the latest, three solutions, adding it to /etc/modules, using the pre-up trick shown later or using kmod (not detailed here).
Configure your interface. Here we assume eth0 and address (2001:0db8:1234:5::1:1). Edit /etc/network/interfaces:
iface eth0 inet6 static pre-up modprobe ipv6 address 2001:0db8:1234:5::1:1 # To suppress completely autoconfiguration: # up echo 0 > /proc/sys/net/ipv6/conf/all/autoconf netmask 64 # The router is autoconfigured and has no fixed address. # It is magically # found. (/proc/sys/net/ipv6/conf/all/accept_ra). Otherwise: #gateway 2001:0db8:1234:5::1
And you reboot or you just
# ifup --force eth0
and you have your static address.