FreeBSD : config: Error: device "tun" is unknown

make buildkernel make[1]: "/usr/src/Makefile.inc1" line 343: SYSTEM_COMPILER: libclang will be built for bootstrapping a cross-compiler. make[1]: "/usr/src/Makefile.inc1" line 348: SYSTEM_LINKER: libclang will be built for bootstrapping a cross-linker. -------------------------------------------------------------- >>> Kernel build for AK started on Wed Jan 8 01:42:55 EET 2020 -------------------------------------------------------------- ===> AK mkdir -p /usr/obj/usr/src/amd64.amd64/sys -------------------------------------------------------------- >>> stage 1: configuring the kernel -------------------------------------------------------------- cd /usr/src/sys/amd64/conf; PATH=/usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/sbin:/usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/bin:/usr/obj/usr/src/amd64.amd64/tmp/legacy/bin:/usr/obj/usr/src/amd64.amd64/tmp/usr/sbin:/usr/obj/usr/src/amd64.amd64/tmp/usr/bin:/sbin:/bin:/usr/sbin:/usr/bin config -d /usr/obj/usr/src/amd64.amd64/sys/AK -I '/usr/src/sys/amd64/conf' -I '/usr/src/sys/amd64/conf' '/usr/src/sys/amd64/conf/AK' config: Error: device "tun" is unknown config: 1 errors *** Error code 1 Stop. make[1]: stopped in /usr/src *** Error code 1 Stop. make: stopped in /usr/src Press any key to continue...