Usage for removing a tunnel device:
# /sbin/ip -6 tunnel del <device>
Usage (generic example for three tunnels):
# /sbin/ip -6 route del <prefixtoroute1> dev ip6tnl1 # /sbin/ip link set ip6tnl1 down # /sbin/ip -6 tunnel del ip6tnl1 # /sbin/ip -6 route del <prefixtoroute2> dev ip6tnl2 # /sbin/ip link set ip6tnl2 down # /sbin/ip -6 tunnel del ip6tnl2 # /sbin/ip -6 route del <prefixtoroute3> dev ip6tnl3 # /sbin/ip link set ip6tnl3 down # /sbin/ip -6 tunnel del ip6tnl3