Network Service Header (NSH) protocol

modulename: nsh.ko

configname: CONFIG_NET_NSH

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Network Service Header (NSH) protocol
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Network Service Header is an implementation of Service Function
Chaining (RFC 7665). The current implementation in Linux supports
only MD type 1 and only with the openvswitch module.

If unsure, say N.

source code:
depends
CONFIG_NET

is depended by
CONFIG_OPENVSWITCH