set up ubond
compile iproute-mptcp, install ip/ip to /bin
GitHub - multipath-tcp/iproute-mptcp at mptcp_v0.96
disable mptcp for ubond0
ip link set dev ubond0 multipath off
change TCP congestion methods
sysctl -w net.ipv4.tcp_congestion_control=cubic
enable routing
create enp9s0.100 subinterface
ip link add link enp9s0 name enp9s0.100 type vlan id 100
add IP & set up interface
ip addr add 10.2.2.1/30 dev enp9s0.100
ip link set up enp9s0.100
masquerade 10.2.2.0/32 for ubond0
iptables -t nat -A POSTROUTING -o ubond0 -j MASQUERADE