default or selected kernelversion does not have config value CONFIG_ISDN_DIVAS_USERIDI.
Result is shown for kernelversion 6.9.9
DIVA User-IDI interface support
modulename: diva_idi.ko
configname: CONFIG_ISDN_DIVAS_USERIDI
Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>CAPI 2.0 subsystem
└─>Active Eicon DIVA Server cards
└─>DIVA User-IDI interface support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
Enable support for user-mode IDI interface.