Routing between same network

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http://serverfault.com – Hi In this scenario there is point -to point serial connection between R6 and R7 , there is router R10 whose interface F0/0 is having ip address of and there is a host machine (R9) with ip address which is running an application, My problem is that Application on R9 will only work when it will get its Gateway as which is of router (R10) , is there any way i can make R6 and R7 transparent for R9 and R10, Or any type of routing using GRE / Route-map or any other way. Thanks in advace (HowTos)