ipv6 over ipv4

opensuse + debian

opensuse:/ # cat /etc/sysconfig/network/ifcfg-tun1
STARTMODE=’onboot’
BOOTPROTO=’static’
TUNNEL=’sit’
TUNNEL_LOCAL_IPADDR=’192.168.1.3’
TUNNEL_REMOTE_IPADDR=’192.168.1.2’
IPADDR=’1011:1aa0:4000:402:2::2/80’
TUNNEL_TTL=’64’

debian:/# grep -A 10 ‘tun1’ /etc/network/interfaces
auto tun1
iface tun1 inet6 v4tunnel
        address 1011:1aa0:4000:402:2::1
        netmask 80
        ttl 64
        endpoint 192.168.1.3
        up ip link set mtu 1480 dev tun1