Why is there an unconstrained clock reported when using the Dual Configuration Intel® FPGA IP on Intel® MAX® 10?

Description

An unconstrained clock is reported as shown below when using Dual Configuration Intel® FPGA IP on MAX®10:

altera_dual_boot:dual_boot_0|alt_dual_boot_avmm:alt_dual_boot_avmm_comp|alt_dual_boot:alt_dual_boot|ru_clk

Resolution

To work around this problem, generate timing constraints including the command "create_generated_clock" in the SDC file.