(192.168.1.128)  (172.16.248.223)
Router <------> PC <---------> Device 1 <--------> Device 2
          (172.16.248.248)    (10.0.1.1)          (10.0.1.2)

default via 192.168.1.1 dev eno1  proto static  metric 100
10.0.1.0/24 via 172.16.248.248 dev usb0
172.16.248.0/24 dev usb0  proto kernel  scope link  src 172.16.248.248
192.168.1.0/24 dev eno1  proto kernel  scope link  src 192.168.1.128  metric 100
192.168.1.0/24 dev eno1  proto kernel  scope link  src 192.168.1.128  metric 202

default via 172.16.248.254 dev eth1
10.0.1.0/24 dev usb1 proto kernel scope link src 10.0.1.1
172.16.248.0/24 dev eth1 proto kernel scope link src 172.16.248.223

default via 10.0.1.1 dev usb0
10.0.1.0/24 dev usb0 proto kernel scope link src 10.0.1.2
172.16.248.0/24 via 10.0.1.1 dev usb0