I don't know why ?

[vcmp]

When I went to create ipv6 tunnel and I typed my  ip address that is assigned by DHPC then It give me that error

IP is blocked. (RFC1918 Private Address Space)

please someone help me 

[cholzhauer]

Because you need to use your public address, not your private address

Enter your public ip and it will work.

[allen4names]

If you are getting the address from your home gateway make sure is is not in shared address space.

[vcmp]

Because you need to use your public address, not your private address

Enter your public ip and it will work.

Well........ I've to thanks you very much

It worked !

Thank you guys :)