/usr/src/xtables-addons-1.40/xt_RAWNAT.Kconfig is in xtables-addons-dkms 1.40-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 | config NETFILTER_XT_TARGET_RAWNAT
	tristate '"RAWNAT" raw address translation w/o conntrack'
	depends on NETFILTER_XTABLES && NETFILTER_ADVANCED
	depends on IP_NF_RAW || IP_NF6_RAW
	---help---
	This option adds the RAWSNAT and RAWDNAT targets which can do Network
	Address Translation (no port translation) without requiring Netfilter
	connection tracking.
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