IPv6 GRE tunnel

["Bill Cerveny" <debian-v6@21st-century-networks.com>]

Hi,

I would like to encapsulate IPv6 packets within an IPv6 GRE tunnel (ie
on IPv6 transport). I can do this with a Cisco router, but the "ip"
command does not support GRE with IPv6. Is the capability to create an
IPv6 GRE planned feature of the "ip" command?  If not, is there anything
else with Linux that supports creation of GRE tunnels on IPv6 transport?

Thanks,

Bill Cerveny

/sbin/ip -6 tunnel help
Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]
          [ mode { ip6ip6 | ipip6 | any } ]
          [ remote ADDR local ADDR ] [ dev PHYS_DEV ]
          [ encaplimit ELIM ]
          [ hoplimit TTL ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]
          [ dscp inherit ]

Where: NAME      := STRING
       ADDR      := IPV6_ADDRESS
       ELIM      := { none | 0..255 }(default=4)
       TTL       := 0..255 (default=64)
       TOS       := { 0x0..0xff | inherit }
       FLOWLABEL := { 0x0..0xfffff | inherit }

/sbin/ip tunnel help
Usage: ip tunnel { add | change | del | show } [ NAME ]
          [ mode { ipip | gre | sit | isatap } ] [ remote ADDR ] [ local
          ADDR ]
          [ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]
          [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]

Where: NAME := STRING
       ADDR := { IP_ADDRESS | any }
       TOS  := { NUMBER | inherit }
       TTL  := { 1..255 | inherit }
       KEY  := { DOTTED_QUAD | NUMBER }