Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.3.0     0.0.0.0         255.255.255.0   U     0      0        0 br_lan
255.255.255.255 0.0.0.0         255.255.255.255 UH    0      0        0 br_lan

Extended routing table

ARP table
IP address       HW type     Flags       HW address            Mask     Device
192.168.3.1      0x1         0x2         a8:a1:59:0f:c8:87     *        br_lan