diff --git a/tools/test-findif.sh b/tools/test-findif.sh
new file mode 100755
index 000000000..0e43b1751
--- /dev/null
+++ b/tools/test-findif.sh
@@ -0,0 +1,216 @@
+#!/bin/bash
+
+# Easy peasy test for findif, configuration via direct edit...
+# Jan Pokorny <jpokorny@redhat.com>
+
+set -u
+ISATTY=$(tput colors &>/dev/null && echo 0 || echo 1)
+ok () {
+ [ $ISATTY -eq 0 ] \
+ && echo -ne "[\033[32m OK \033[0m]" \
+ || echo -n "[ OK ]"
+ echo " $@"
+}
+fail () {
+ [ $ISATTY -eq 0 ] \
+ && echo -ne "[\033[31mFAIL\033[0m]" \
+ || echo -n "[FAIL]"
+ echo " $@"
+}
+info () {
+ [ $ISATTY -eq 0 ] \
+ && echo -e "\033[34m$@\033[0m" \
+ || echo "$@"
+}
+mimic_return () { return $1; }
+
+
+PRG=./findif
+
+DUMMY_USER=test-findif
+
+# carefully selected to fit TEST-NET-2
+# http://en.wikipedia.org/wiki/Reserved_IP_addresses#Reserved_IPv4_addresses
+DUMMY_IP=198.51.100.1
+DUMMY_NM=255.255.255.0
+
+# derived
+DUMMY_IP_13=$(echo $DUMMY_IP | cut -d. -f1-3)
+DUMMY_IP_4=$( echo $DUMMY_IP | cut -d. -f4 )
+DUMMY_NM_13=$(echo $DUMMY_NM | cut -d. -f1-3)
+DUMMY_NM_4=$( echo $DUMMY_NM | cut -d. -f4 )
+
+
+TEST_DATA=\
+" # 1-9: valid cases, invalid cases: 10-19: ip, 20-29: netmask bits, 30-39: netmask
+ # OCF_RESKEY_ip, OCF_RESKEY_cidr_netmask, ret, exp_dev, exp_nm, exp_bc
+ # 1) loopback
+ 127.0.0.1, , 0, lo, 255.0.0.0, 127.255.255.255
+ # 2) DUMMY_IP+1
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), , 0, dummy0, 255.255.255.0, ${DUMMY_IP_13}.255
+ # 3) DUMMY_IP+1, explicit netmask bits
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), 24, 0, dummy0, 255.255.255.0, ${DUMMY_IP_13}.255
+ # 4) DUMMY_IP+1, explicit netmask
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), ${DUMMY_NM}, 0, dummy0, 255.255.255.0, ${DUMMY_IP_13}.255
+ #
+ # 10) *invalid* ip (missing last item in quad)
+ ${DUMMY_IP_13}., , 6, NA, NA, NA
+ # 11) *invalid* ip (random string)
+ foobar, , 6, NA, NA, NA
+ # 20) DUMMY_IP+1, explicit *invalid* netmask bits (33)
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), 33 , 6, NA, NA, NA
+ # 21) DUMMY_IP+1, explicit *invalid* netmask bits (-1)
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), -1 , 6, NA, NA, NA
+ # 22) DUMMY_IP+1, explicit *invalid* netmask bits (random string)
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), foobar , 6, NA, NA, NA
+ # 30) DUMMY_IP+1, explicit *invalid* netmask (missing last item in quad)
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), ${DUMMY_NM_13}. , 6, NA, NA, NA
+ # 30) DUMMY_IP+1, explicit *invalid* netmask (random string containing dot)
+ ${DUMMY_IP_13}.$((DUMMY_IP_4 + 1)), foo.bar , 6, NA, NA, NA
+"
+
+
+die() {
+ echo "$@"
+ exit
+}
+
+warn() {
+ echo "$@"
+}
+
+setup() {
+ echo $FUNCNAME...
+
+ if [ "$(uname -o)" != "GNU/Linux" ]; then
+ die "Only tested with Linux, feel free to edit the condition."
+ fi
+
+ [ -x ${PRG} ] || die "Forgot to compile ${PRG} for me to test?"
+
+ if [ $(id -u) -ne 0 ]; then
+ die "Due to (unobtrusive) juggling with routing, run as root."
+ fi
+
+ if ! useradd -M ${DUMMY_USER} 2>/dev/null; then
+ die "Cannot add user ${DUMMY_USER} for testing purposes."
+ fi
+
+ if lsmod | grep -q "^dummy[ ]\+"; then
+ warn "Looks like you already use dummy network device."
+ else
+ modprobe dummy || die "No dummy kernel module (per name) at hand."
+ fi
+
+
+ if ! ifconfig dummy0 ${DUMMY_IP} netmask ${DUMMY_NM}; then
+ die "Cannot ifconfig dummy0"
+ fi
+}
+
+teardown() {
+ echo $FUNCNAME...
+
+ userdel ${DUMMY_USER} || warn "Cannot kick user ${DUMMY_USER} out."
+ rmmod dummy || warn "Cannot kick dummy kernel module out."
+}
+
+proceed() {
+ echo $FUNCNAME...
+
+ err_cnt=0
+ echo "${TEST_DATA}" | while read curline; do
+ if echo "${curline}" | grep -qv -e '^[ \t]*#' -e '^$'; then
+ err_this=0
+ curline="$(echo "${curline}" | tr '\t' ' ' | tr -s ' ')"
+ info "$(echo "${lastline}" | sed 's|^#|------|')"
+
+ ip="$(echo "${curline}" | cut -d, -f1 | sed 's|^ *||g')"
+ mask="$(echo "${curline}" | cut -d, -f2 | sed 's|^ *||g')"
+ exp_ec="$(echo "${curline}" | cut -d, -f3 | sed 's|^ *||g')"
+ exp_dev="$(echo "${curline}" | cut -d, -f4 | sed 's|^ *||g')"
+ exp_nm="$(echo "${curline}" | cut -d, -f5 | sed 's|^ *||g')"
+ exp_bc="$(echo "${curline}" | cut -d, -f6 | sed 's|^ *||g')"
+ #echo "${ip}, ${mask}, ${exp_ret}, ${exp_dev}, ${exp_nm}"
+
+ env="OCF_RESKEY_ip=${ip} OCF_RESKEY_cidr_netmask=${mask}"
+ echo "${env}"
+ res="$(su ${DUMMY_USER} -c "${env} ${PRG} 2>&1")"
+ got_ec=$?
+
+ res="$(echo "${res}" | tr '\t' ' ' | tr -s ' ')"
+ res_check=
+ echo "${res}" | while read res_line; do
+ echo "${res_line}" | grep -q "^[a-z0-9]\+ netmask"
+ if [ $? -ne 0 ]; then
+ echo "${res_line}" | grep -q "Copyright Alan Robertson" \
+ && break
+ echo "${res_line}"
+ elif [ -z "${res_check}" ]; then
+ res_check="${res_line}"
+ else
+ warn "More than one line with results."
+ fi
+ done
+
+ if [ "${got_ec}" != "${exp_ec}" ]; then
+ warn "FAIL exit code: ${got_ec} vs ${exp_ec}"
+ let err_this+=1
+ fi
+
+ if [ -n "$res_check" ]; then
+ got_dev="$(echo "${res_check}" | cut -d' ' -f1)"
+ got_nm="$(echo "${res_check}" | cut -d' ' -f3)"
+ got_bc="$(echo "${res_check}" | cut -d' ' -f5)"
+ #echo "${got_dev}, ${got_nm}, ${got_bc}"
+
+ if [ "${got_dev}" != "${exp_dev}" ]; then
+ warn "FAIL device: ${got_dev} vs ${exp_dev}"
+ let err_this+=1
+ fi
+ if [ "${got_nm}" != "${exp_nm}" ]; then
+ warn "FAIL netmask: ${got_nm} vs ${exp_nm}"
+ let err_this+=1
+ fi
+ if [ "${got_bc}" != "${exp_bc}" ]; then
+ warn "FAIL broadcast: ${got_bc} vs ${exp_bc}"
+ let err_this+=1
+ fi
+ fi
+
+ if [ $err_this -eq 0 ]; then
+ ok
+ else
+ fail
+ let err_cnt+=1
+ fi
+ fi
+ lastline="${curline}"
+ mimic_return $err_cnt # workaround separate process limitation
+ done
+ err_cnt=$?
+
+ echo "--- TOTAL ---"
+ [ $err_cnt -eq 0 ] && ok || fail $err_cnt
+ return $err_cnt
+}
+
+if [ $# -ge 1 ]; then
+ case $1 in
+ setup|proceed|teardown)
+ $1
+ exit 0
+ ;;
+ *)
+ echo "usage: ./$0 [setup|proceed|teardown]"
+ exit 0
+ ;;
+ esac
+fi
+
+setup
+proceed
+ret=$?
+teardown
+
+exit $ret