Keama doesn't build on Free BSD 12.1

./configure make ...

cd keama make

cc -DHAVE_CONFIG_H -I. -I../includes -g -O2 -Wall -Werror -fno-strict-aliasing -I../includes -I/tmp/dhcp-4.4.2/bind/include -MT keama.o -MD -MP -MF .deps/keama.Tpo -c -o keama.o keama.c
keama.c:75:19: error: use of undeclared identifier 'AF_INET'
local_family = AF_INET;
^
keama.c:77:19: error: use of undeclared identifier 'AF_INET6'
local_family = AF_INET6;
^

See RT #17269