"geli: Wrong key" with a simple passphrase

Dear all,

I tried to geli my external USB drive da0 with a simple passphrase
But I'm getting "Wrong key for da0" when I want to attach it.

Let me know if I have forgot a step.

Cheers,Aurelien

Log
--

# uname -a
FreeBSD  11.0-CURRENT FreeBSD 11.0-CURRENT #0 r271779: Fri Sep 19 01:18:53
UTC 2014     root_at_grind.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/RPI-B
arm

What I have done :

# geli init da0
Enter new passphrase:
Reenter new passphrase:
Metadata backup can be found in /var/backups/da0.eli and
...

# geli attach da0
Enter passphrase:
 for da0.


# cat /var/backups/da0.eli | hexdump -c | head -1
0000000   G   E   O   M   :   :   E   L   I  \0  \0  \0  \0  \0  \0  \0