CONFIG_INET_XFRM_TUNNEL (not configurable)

modulename: xfrm4_tunnel.ko

configname: CONFIG_INET_XFRM_TUNNEL

Linux Kernel Configuration
└─>Networking
└─>Networking options
└─>INET_XFRM_TUNNEL
In linux kernel since version 2.6.17 (release Date: 2006-06-17)  
source code: