Re: dropbear-initramfs failing - following update?

[Gareth Evans]

After some further research and testing:

/usr/share/initramfs-tools/hooks/dropbear

includes:

<snip>
# Copy config and host keys
mkdir -p -- "$DESTDIR/etc/dropbear"
if [ -e /etc/dropbear/initramfs/dropbear.conf ]; then
    cp -pt "$DESTDIR/etc/dropbear" "/etc/dropbear/initramfs/dropbear.conf"
fi

copied_hostkey="n"
for keytype in rsa ecdsa ed25519; do
    hostkey="/etc/dropbear/initramfs/dropbear_${keytype}_host_key"
    if [ -f "$hostkey" ]; then
        cp -pt "$DESTDIR/etc/dropbear" "$hostkey"
        copied_hostkey="y"
    fi
done
if [ "$copied_hostkey" = "n" ]; then
    dropbear_warn "Missing host keys, SSH login to initramfs won't work!"
fi

# Copy authorized_keys
mkdir -m0700 -- "$home/.ssh"
if [ -e /etc/dropbear/initramfs/authorized_keys ]; then
    cat /etc/dropbear/initramfs/authorized_keys
else
    for keytype in dsa rsa ecdsa ed25519; do
        pubkey="/etc/dropbear/initramfs/id_${keytype}.pub"
        if [ -e "$pubkey" ]; then
            cat "$pubkey"
        fi
    done
fi >"$home/.ssh/authorized_keys"
</snip>

...which suggests 

[main or whatever]/etc/dropbear/initramfs/authorized_keys 

should not exist as such within initramfs.

I can confirm:

$ unmkinitramfs /boot/initrd.img-$(uname -r) .

$ sudo cat /etc/dropbear/initramfs/authorized_keys | wc -l
5

$ sudo diff /etc/dropbear/initramfs/authorized_keys 
./main/root-jjnlnk7i54/.ssh/authorized_keys
$

So all seems to be in order.

Rumour has it that if dropbear is installed as well as dropbear-initramfs, this 
can cause problems, though that's a bit vague and I am doubtful.

Nonetheless I will test again having removed dropbear when I'm near the machine 
to press buttons if needed, probably mid week.

Thanks
G