make nfs root dies on dracut setup in stretch build

[Nat Sincheler]

We are trying to build a stretch NFS root. We keep getting this error:

#####################################################
Setting up dracut (044+241-3) ...
dracut: Generating /boot/initrd.img-4.9.0-3-amd64
dracut: dracut module 'livenet' depends on 'url-lib', which can't be 
installed
dracut: dracut module 'livenet' cannot be found or installed.
dpkg: error processing package dracut (--configure):
  subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
  dracut
ERROR: 256 256
ERROR: chroot /srv/fai/stretch-amd64 dpkg --configure --pending return 
code 1
install_packages: executing chroot /srv/fai/stretch-amd64 dpkg -C
The following packages are only half configured, probably due to problems
configuring them the first time.  The configuration should be retried using
dpkg --configure <package> or the configure menu option in dselect:
  dracut               Low-level tool for generating an initramfs image 
(automat

install_packages: executing chroot /srv/fai/stretch-amd64 apt-get clean
2 errors during executing of install_packages
ERROR: install_packages had exit code: 3
Log file written to /var/log/fai/fai-make-nfsroot.log
#####################################################

We are using FAI version 5.3.6 on Debian jessie.


Here are the packages that we install:

PACKAGES install

# Administrative and debugging utilities
deborphan dnsutils locales numactl psmisc rsync wipe
syslinux pxelinux

cryptsetup

# Base
dialog iproute lsb-release xz-utils

# Disk and file system
dosfstools dump e2fsprogs hdparm lvm2 mdadm parted xfsprogs xfsdump

# FAI (Perl sends log messages after build)
fai-nfsroot libmime-lite-perl lftp perl

# Hardware
hwinfo lshw pciutils procinfo read-edid smartmontools usbutils

# Kernel
firmware-bnx2 firmware-bnx2x firmware-linux firmware-myricom
firmware-netxen firmware-qlogic firmware-realtek kmod udev

# BusyBox
busybox-static

# Install dracut and remove initramfs-tools:
dracut-network dracut live-boot- initramfs-tools-
dracut-config-generic

systemd-sysv- sysvinit-core

# Networking
dnsutils isc-dhcp-client ntpdate openssh-client openssh-server rdate

# NFS client
nfs-common rpcbind


PACKAGES aptitude I386
grub-pc
linux-image-686-pae

PACKAGES aptitude AMD64
grub-pc
linux-image-amd64