How to make a network scanner Oki MC261 work

Hi,

no idea why, but I just cannot find any serious docs on how to make my 
Oki MC261 scanner work.
is this because nobody tried yet or because it should be easy?

I tried sane-airscan some guessed URLs
[devices]
MC361_9967e=http://MC361.fritz.box:9967/eSCL
MC361_9100e=http://MC361.fritz.box:9100/eSCL
MC361_9967w=http://MC361.fritz.box:9967/WSDScanner, WSD
MC361_9100w=http://MC361.fritz.box:9100/WSDScanner, WSD

but it just doesn't work.

Open ports according to nmap are
80/tcp   open  http
515/tcp  open  printer
631/tcp  open  ipp
9100/tcp open  jetdirect
9967/tcp open  unknown

printing works fine.

I tried HPLIP because of the jetdirect port, but this doesn't work either.

cite from manual:> All major network protocols supported via ethernet 
card with
> internal web server for printer and network card set-up and
> management. TCP/IPv4&v6, SMTP, POP3, HTTP, SNMPv1&v3,
> DHCP, DNS, LPR, Port9100, BOOTP, ARP, FTP, CIFS, LDAP, SLP,
> Bonjour, Web Services Discovery, NetWare, EtherTalk, NetBEUI

it offers Netware, Netbeui and ethertalk, but these I disabled because 
they are outdated?
avahi-daemon.service was disabled again, I enabled & started it.
sane
saned.socket was disabled, I enabled it.

yeah, after enabling this, lookup works:
network dnssd://MC361._pdl-datastream._tcp.local/
network dnssd://MC361._printer._tcp.local/

but this does not help with scanning, or does it?

any idea what I am missing?

ps. for my previous printer, i found out there were three different 
backends that somehow worked with it.
which backends could work with the Oki?


I installed https://aur.archlinux.org/packages/okimfpsdrv
but this did not help either. manual work needed?


thank you very much

JPT