Try to configure the routing
but what I've got packets on gateway do not go away.
tcpdump -i br1 -n shows that arp does not pass.
13:25:33.467025 ARP, Request who-has 126.96.36.199 tell 188.8.131.52, length 28
external weighs enp1s0f0
br1 on enp1s0f1
in br1 is enabled with dev 184.108.40.206