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Example: Accepting DHCP Packets with Specific Addresses

Configure a filter (rpf-dhcp) that accepts DHCP packets with a source address of 0.0.0.0 and a destination address of 255.255.255.255:



[edit firewall family inet]
filter rpf-dhcp {


term dhcp {


from {


source-address {
0.0.0.0/32;
}




destination-address {
255.255.255.255/32;
}


}




then {
accept;
}


}


}

To apply this filter to an interface, include the rpf-check fail-filter statement at the [edit interface interface-name unit logical-unit-number family family-name] hierarchy level:



[edit interface interface-name unit logical-unit-number family inet]
rpf-check fail-filter rpf-dhcp;

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