ip rule

IP routing policy database management. More information: https://man7.org/linux/man-pages/man8/ip-rule.8.html.

• Display the routing policy:
  ip rule {{show|list}}
• Add a new rule based on packet source addresses:
  sudo ip rule add from {{192.168.178.2/32}}
• Add a new rule based on packet destination addresses:
  sudo ip rule add to {{192.168.178.2/32}}
• Delete a rule based on packet source addresses:
  sudo ip rule delete from {{192.168.178.2/32}}
• Delete a rule based on packet destination addresses:
  sudo ip rule delete to {{192.168.178.2/32}}
• Flush all deleted rules:
  ip rule flush
• Save all rules to a file:
  ip rule save > {{path/to/ip_rules.dat}}
• Restore all rules from a file:
  ip rule restore < {{path/to/ip_rules.dat}}