default or selected kernelversion does not have config value CONFIG_NF_NAT_MASQUERADE_IPV4.
Result is shown for kernelversion 6.8.9
CONFIG_NF_NAT_MASQUERADE_IPV4 (not configurable)
configname: CONFIG_NF_NAT_MASQUERADE_IPV4
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>IP: Netfilter Configuration
└─>NF_NAT_MASQUERADE_IPV4