cat /etc/iproute2/rt_tables

#
# reserved values
#
255     local
254     main
253     default
0       unspec
#
# local
#
#1      inr.ruhep

201 local_net
202 main_inet
203 backup_inet

cat /etc/netplan/config.yaml

#201 local_net
#202 main_inet
#203 backup_inet
network:
  ethernets:
    #201 local_net
    ens160:
      dhcp4: no
      addresses:
        - 192.168.150.170/24
        - 192.168.150.171/24
      routes:
        - to: 192.168.250.0/24
          via: 192.168.150.100
        - to: default
          via: 192.168.150.100
          table: 201
    #203 backup_inet
    ens192:
      dhcp4: no
      addresses:
        - 89.89.89.174/28
      routes:
        - to: default
          via: 89.89.89.161
          table: 203
    #202 main_inet
    ens224:
      dhcp4: no
      addresses:
        - 212.212.212.70/29
      routes:
        - to: default
          via: 212.212.212.65
      routes:
        - to: default
          via: 212.212.212.65
          table: 202

      routing-policy:
        - from: 192.168.150.35
          to: 8.8.8.8
          table: 202
          priority: 90
        - from: 192.168.150.35
          to: 8.8.4.4
          table: 203
          priority: 100
        - from: 192.168.150.36
          table: 203
          priority: 110