Decrypt Keyserver

Decrypts a filesystem with key from ssh-server. Integrated in initramfs

Configure initramfs for networking (/etc/initramfs-tools/initramfs.conf)

DEVICE=eth0 IP=[IP]::[GATEWAY]:[NETMASK]:[HOSTNAME]:eth0:off

Where the configured hostname is the keyservers ssh username.

Install

Place dropbear private key file to /root/id_dropbear
Configure known_hosts and nameservers in /usr/share/initramfs-tools/hooks/crypt-keyserver
Configure keyservers host/ip address in /usr/share/initramfs-tools/scripts/local-top/decrypt
and fire it up with:

update-initramfs -u