default or selected kernelversion does not have config value CONFIG_IP_DCCP_TFRC_LIB.
Result is shown for kernelversion 6.9.9
CONFIG_IP_DCCP_TFRC_LIB (not configurable)
configname: CONFIG_IP_DCCP_TFRC_LIB
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>The DCCP Protocol
└─>DCCP CCIDs Configuration
└─>IP_DCCP_TFRC_LIB