This seems to work for me
$ cat /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp iface eth0 inet6 dhcp up sysctl net.ipv6.conf.$IFACE.accept_ra=1 up rdisc6 $IFACE
This seems to work for me
$ cat /etc/network/ interfaces conf.$IFACE. accept_ ra=1
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
iface eth0 inet6 dhcp
up sysctl net.ipv6.
up rdisc6 $IFACE