iptables -t raw -I PREROUTING_Spoofing -i br-lan -j ACCEPT

The `iptables` command allows you to manage network packet filtering and routing using its various tables and chains. In this case, you're referring to the `-t raw` option which deals with unprocessed packets before they're passed through the kernel's networking stack.

To insert a rule into the `PREROUTING` chain of the `raw` table, specifically targeting spoofed packets coming from interface `br-lan`, and allowing them, you would use the following syntax:

iptables -t raw -I PREROUTING_Spoofing -i br-lan -j ACCEPT

Here's what each part means:
- `-t raw`: Selects the `raw` table.
- `-I PREROUTING_Spoofing`: Inserts the rule at a specified position (`I` stands for "insert") within the `PREROUTING` chain, assuming there's already a `PREROUTING_Spoofing` chain defined or create one if it doesn't exist. This chain is typically used to handle incoming packets before any processing.
- `-i br-lan`: Matches the packet ingress interface as `br-lan`.
- `-j ACCEPT`: Applies the `ACCEPT` action, meaning allow these packets to pass through without further inspection.

Remember to run this command with appropriate privileges, such as root access, since modifying the `raw` table usually requires elevated permissions.