Gateway setting on multiple interface

I have two devices(actually not PC). Device A is connected with exteal network, this IP is 192.168.1.2, I use this for gateway. Device B has two interface like below. Two interfaces use same gateway, so I set manually. ping test is fail.(ping -I eth0 www.google.com / ping -I eth1 www.google.com) what's wrong is this?

eth0

IP : 192.168.1.1 mask : 255.255.255.252

eth1

IP : 192.168.1.11 mask : 255.255.255.248

Keel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default 192.168.1.2 0.0.0.0 UG 0 0 0 eth0

default 192.168.1.2 0.0.0.0 UG 0 0 0 eth1

192.168.1.0 * 255.255.255.252 U 0 0 0 eth0

192.168.1.0 * 255.255.255.0 U 0 0 0 eth1

192.168.1.8 * 255.255.255.248 U 0 0 0 eth1

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