IP: IPsec BEET mode

modulename: xfrm4_mode_beet.ko

configname: CONFIG_INET_XFRM_MODE_BEET

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>IP: IPsec BEET mode
In linux kernel since version 2.6.19 (release Date: 2006-11-29)  
Support for IPsec BEET mode.

If unsure, say Y.

source code:
net/ipv4/xfrm4_mode_beet.c
selects
CONFIG_XFRM