Solaris 10: how to remove this tunnel?

This tunnel won't remove. root@solaris10:~# ifconfig ip.6to4tun0 down ifconfig: setifflags: SIOCGLIFFLAGS: ip.6to4tun0: no such interface root@solaris10:~# ifconfig ip.6to4tun0 unplumb ifconfig: unplumb: SIOCGLIFFLAGS: ip.6to4tun0: no such interface The short answer will be "it din't exist!" but.. root@solaris10:~# ifconfig -a|ggrep -A 11 6to4 ip.6to4tun0: flags=2200041 mtu 65515 index 9 inet tunnel src 192.168.0.1 tunnel hop limit 60 inet6 fe80::203:baff:fe50:cbe6/128 The interface works ping 192.168.0.1 192.168.0.1 is alive ping -A inet6 fe80::203:baff:fe50:cbe6 fe80::203:baff:fe50:cbe6 is alive