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This series of dropdowns allows you to specify the parameters for the type of IP block you want to assign, as well as tag selection modes. Then it will look at the IPAM blocks that match your criteria to find the correct IP assignment based on availability and relevant parameters. For Smart Assign, IP type and mask are required, but all other filters are optional.
Additional advanced Smart Assign options are available under "Advanced Options", including VLAN and LIR.
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