tce-load -i compiletc net-snmp-dev cups-dev libusb-dev dbus-python3.6-dev sane-backends-dev

https://sourceforge.net/projects/hplip/files/hplip/3.20.3/hplip-3.20.3.tar.gz/download

cd hplip-3.20.3

edit io/hpmud/musb.h
#include <libusb-1.0/libusb.h>

CC="gcc -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --sysconfdir=/usr/local/etc --localstatedir=/var --disable-gui-build --disable-qt4 --disable-doc-build --with-cupsbackenddir=/usr/local/lib/cups/backend --with-cupsfilterdir=/usr/local/lib/cups/filter --with-icondir=/usr/local/share/applications --bindir=/usr/local/bin --with-mimedir=/usr/local/share/cups/mime

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;
find . -name config.status -type f -exec sed -i 's/-g -O2//g' {} \;

make [0m 42.81s]
sudo make install

/var/lib/hp
/var/log/hp/tmp

Edit /etc/hp/hplip.conf
bin=/usr/bin -> /usr/local/bin

Edit /etc/udev/rules.d/56-hpmud.rules
lp -> staff
/usr/bin/hp-config_usb_printer /usr/local/bin/hp-config_usb_printer

correct python location in:
/usr/local/share/hplip/base/magic.py
/usr/local/share/hplip/uninstall.py
/usr/local/share/hplip/upgrade.py
/usr/local/share/hplip/logcapture.py
/usr/local/share/hplip/doctor.py

$ hp-makeuri 192.168.1.170
...
CUPS URI: hp:/net/Officejet_6700?ip=192.168.1.170
SANE URI: hpaio:/net/Officejet_6700?ip=192.168.1.170
HP Fax URI: hpfax:/net/Officejet_6700?ip=192.168.1.170

$ hp-probe -bnet
...
Device URI                               Model           Name    
  ---------------------------------------  --------------  --------
  hp:/net/Officejet_6700?ip=192.168.1.170  Officejet_6700  HP86C02B

$ hp-info -dhp:/net/Officejet_6700?ip=192.168.1.170
...
error: No device found that support this feature