Autoattach geli device but not at startup

[Matthias Fechner]

Hi,

I have here a setup where some backup directories are mounted
encrypted (using geli).
rc.conf:
geli_devices="ad3"
geli_ad3_flags="-k /root/backup1.key"
...

But if the system must be rebooted it asks for the password before a
network connection is available.
The computer has no keyboard via default so it is really a pain to get
the system up again.

Is their a possibility to do something like that after the reboot:
mount /mnt/backup1
and mount starts geli and geli will ask for the passphrase?

Thanks,
Matthias

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