CONFIG_MACH_DNS323 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_MACH_DNS323.
Result is shown for kernelversion 6.0-rc7

D-Link DNS-323

modulename: dns323-setup.ko
configname: CONFIG_MACH_DNS323

Linux Kernel Configuration
└─> Marvell Orion
└─> D-Link DNS-323

Say 'Y' here if you want your kernel to support the
D-Link DNS-323 platform.

source code: