default or selected kernelversion does not have config value CONFIG_IP_NF_TARGET_TOS.
Result is shown for kernelversion 5.4.123
TOS target support
modulename: ipt_TOS.ko
configname: CONFIG_IP_NF_TARGET_TOS
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network packet filtering (replaces ipchains)
└─>IP: Netfilter Configuration
└─>TOS target support
In linux kernel since version 2.6.12
This option adds a `TOS' target, which allows you to create rules in
the `mangle' table which alter the Type Of Service field of an IP
packet prior to routing.
To compile it as a module, choose M here. If unsure, say N.
the `mangle' table which alter the Type Of Service field of an IP
packet prior to routing.
To compile it as a module, choose M here. If unsure, say N.