Current Layout

             R2       				R1 				Upstream
FE0 172.25.255.254/24	       FE0 192.168.255.254/16<----->192.168.255.253/16
Ser0 10.10.10.2/29<------------>Ser0 10.10.10.1/29

Proposed Layout

             R2       				R1 				Upstream
FE0 172.25.255.254/24	       FE0 172.24.255.254/24<----->192.168.255.253/16
Ser0 10.10.10.2/29<------------>Ser0 10.10.10.1/29

I think this should work because I changed R1 FE0 to a different network than the upstream router.