Then it looks like your saprouter on 10.1.2.17 works fine, because the SAPROUTER at SAP side 193.39.131.34 responded already with "route expected".
It might be, that your official IP address needs to be known at SAP side to to route it to sapservX
For that, you may follow
http://service.sap.com/sap/support/notes/35010
You also can open a SAP ticket as mentioned in that note
Best regards,
Matthias