net/xfrm/Kconfig

#
# XFRM configuration
#
config XFRM
       bool
       depends on NET

config XFRM_USER
	tristate "IPsec user configuration interface"
	depends on INET && XFRM
	---help---
	  Support for IPsec user configuration interface used
	  by native Linux tools.

	  If unsure, say Y.