tldr/pages/linux/ip-rule.md

ip rule

IP routing policy database management. More information: https://manned.org/ip-rule.

• Display the routing policy:

ip {{[ru|rule]}} {{show|list}}

• Add a new rule based on packet source addresses:

sudo ip {{[ru|rule]}} add from {{192.168.178.2/32}}

• Add a new rule based on packet destination addresses:

sudo ip {{[ru|rule]}} add to {{192.168.178.2/32}}

• Delete a rule based on packet source addresses:

sudo ip {{[ru|rule]}} delete from {{192.168.178.2/32}}

• Delete a rule based on packet destination addresses:

sudo ip {{[ru|rule]}} delete to {{192.168.178.2/32}}

• Flush all deleted rules:

ip {{[ru|rule]}} flush

• Save all rules to a file:

ip {{[ru|rule]}} save > {{path/to/ip_rules.dat}}

• Restore all rules from a file:

ip {{[ru|rule]}} restore < {{path/to/ip_rules.dat}}