diff --git a/run-tests b/run-tests
index 68e26ca..d71cecb 100755
--- a/run-tests
+++ b/run-tests
@@ -14,18 +14,36 @@
 # GNU General Public License for more details.
 
 # Set colour escape sequences
-RED='\033[0;31m'
-YELLOW='\033[1;33m'
-ORANGE='\033[0;33m'
-GREEN='\033[0;32m'
-DARK='\033[1;30m'
-RESET='\033[0m'
+
+PS4='+ ${BASH_SOURCE:-$0}@${LINENO:-0}${FUNCNAME:+#${FUNCNAME}()}: '
+
+if [[ -n "${NO_COLOR:-}" ]] || ! colors="$(tput colors 2>/dev/null)" || (( "${colors:-0}" < 16 )); then
+  RED=''
+  YELLOW=''
+  ORANGE=''
+  GREEN=''
+  DARK=''
+  RESET=''
+else
+  RED='\033[0;31m'
+  YELLOW='\033[1;33m'
+  ORANGE='\033[0;33m'
+  GREEN='\033[0;32m'
+  DARK='\033[1;30m'
+  RESET='\033[0m'
+fi
+
 # Set Pass/Fail signatures
 PASS="✓"
 FAIL="✗"
+
 # Counters
 COUNT_PASS=0
 COUNT_FAIL=0
+
+# Names of files in which test cases failed
+declare -A FAILED
+
 # Flag for determining whether a test script called the `runtest' function
 RUNTEST_CALLED=0
 
@@ -284,6 +302,9 @@ function _pass {
 
 function _fail {
   COUNT_FAIL=$((COUNT_FAIL+1))
+  if [[ -v TEST ]]; then
+    FAILED["$TEST"]=1
+  fi
   ( >&2 echo -e "  ${RED}${FAIL} ${@}${RESET}" )
 }
 
@@ -342,16 +363,28 @@ evaltest() {
   TEST_BUSCTL_STATUS_RC=""
   # Keep this random, as we will never know the ifindex up-front
   ip_ifindex=$((RANDOM%=64))
+  # Same for the device
+  dev="tun${RANDOM}"
 
   # Clear foreign_option_*
-  for foreign_option_varname in "${!foreign_option_@}"; do
-    declare "${foreign_option_varname}="
-  done
+  unset "${!foreign_option_@}"
 
   # Import the test configuration
-  source "${TEST}"
+  source "${TEST}" || return
+
+  if (( RUNTEST_CALLED > 0 )); then
+    return
+  fi
+
+  declare -a foreign_options || return
+
+  local i=0
+  local opt
+  for opt in "${foreign_options[@]}" in; do
+    declare "foreign_option_$(( i += 1 ))=${opt}"
+  done
 
-  (( RUNTEST_CALLED > 0 )) || runtest
+  runtest
 }
 
 echo "update-systemd-resolved Test Suite"
@@ -376,5 +409,13 @@ done
 echo -e "  ${GREEN}${PASS} ${COUNT_PASS} Passed${RESET}"
 echo -e "  ${RED}${FAIL} ${COUNT_FAIL} Failed${RESET}"
 
+if (( "${#FAILED[@]}" > 0 )); then
+  echo -e "\n  ${YELLOW}The following files have failing test cases:${RESET}"
+
+  for failed in "${!FAILED[@]}"; do
+    echo -e "    ${ORANGE}${failed}${RESET}"
+  done
+fi
+
 # Make sure we fail if there are failed tests
 [[ ${COUNT_FAIL} -eq 0 ]]
diff --git a/tests/01_no_updates.sh b/tests/01_no_updates.sh
index ed17a72..fda7906 100644
--- a/tests/01_no_updates.sh
+++ b/tests/01_no_updates.sh
@@ -1,6 +1,5 @@
 # Emulate OpenVPN environment
 script_type="up"
-dev="tun01"
 
 TEST_TITLE="No Updates"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/02_single_ipv4_dns.sh b/tests/02_single_ipv4_dns.sh
index 5e7a7e6..5e59152 100644
--- a/tests/02_single_ipv4_dns.sh
+++ b/tests/02_single_ipv4_dns.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun02"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
+
+foreign_options=("dhcp-option DNS 1.23.4.56")
 
 TEST_TITLE="Single IPv4 DNS Server"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/03a_multiple_ipv4_dns_1.sh b/tests/03a_multiple_ipv4_dns_1.sh
index e72fb84..17d77f9 100644
--- a/tests/03a_multiple_ipv4_dns_1.sh
+++ b/tests/03a_multiple_ipv4_dns_1.sh
@@ -1,7 +1,10 @@
 script_type="up"
-dev="tun03"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 5.6.7.89"
+
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 5.6.7.89"
+)
 
 TEST_TITLE="Multiple IPv4 DNS Servers (Part 1)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/03b_multiple_ipv4_dns_2.sh b/tests/03b_multiple_ipv4_dns_2.sh
index ec0d172..3118887 100644
--- a/tests/03b_multiple_ipv4_dns_2.sh
+++ b/tests/03b_multiple_ipv4_dns_2.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun03"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 5.6.7.89"
-foreign_option_3="dhcp-option DNS 34.5.67.8"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 5.6.7.89"
+  "dhcp-option DNS 34.5.67.8"
+)
 
 TEST_TITLE="Multiple IPv4 DNS Servers (Part 2)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/04a_single_dns_domain.sh b/tests/04a_single_dns_domain.sh
index 5038ad2..76ba3b0 100644
--- a/tests/04a_single_dns_domain.sh
+++ b/tests/04a_single_dns_domain.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun04"
-foreign_option_1="dhcp-option DOMAIN example.com"
+
+foreign_options=("dhcp-option DOMAIN example.com")
 
 TEST_TITLE="Single DNS Domain"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/04b_multiple_dns_domains.sh b/tests/04b_multiple_dns_domains.sh
index 4ac8717..249ab47 100644
--- a/tests/04b_multiple_dns_domains.sh
+++ b/tests/04b_multiple_dns_domains.sh
@@ -1,7 +1,9 @@
 script_type="up"
-dev="tun04"
-foreign_option_1="dhcp-option DOMAIN example.com"
-foreign_option_2="dhcp-option DOMAIN example.co"
+
+foreign_options=(
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN example.co"
+)
 
 TEST_TITLE="Multiple DNS Domains"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/05a_dns_domain_and_search_1.sh b/tests/05a_dns_domain_and_search_1.sh
index 9a0d6a6..a8feccb 100644
--- a/tests/05a_dns_domain_and_search_1.sh
+++ b/tests/05a_dns_domain_and_search_1.sh
@@ -1,7 +1,9 @@
 script_type="up"
-dev="tun05"
-foreign_option_1="dhcp-option DOMAIN example.com"
-foreign_option_2="dhcp-option DOMAIN-SEARCH example.org"
+
+foreign_options=(
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.org"
+)
 
 TEST_TITLE="DNS Single Domain and Single Search"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/05b_dns_domain_and_search_2.sh b/tests/05b_dns_domain_and_search_2.sh
index a76b3cd..36a5634 100644
--- a/tests/05b_dns_domain_and_search_2.sh
+++ b/tests/05b_dns_domain_and_search_2.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun05"
-foreign_option_1="dhcp-option DOMAIN example.com"
-foreign_option_2="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_3="dhcp-option DOMAIN-SEARCH example.net"
+
+foreign_options=(
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN-SEARCH example.net"
+)
 
 TEST_TITLE="DNS Single Domain and Dual Search"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/05c_dns_domain_and_search_3.sh b/tests/05c_dns_domain_and_search_3.sh
index 39d8dda..897e697 100644
--- a/tests/05c_dns_domain_and_search_3.sh
+++ b/tests/05c_dns_domain_and_search_3.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun05"
-foreign_option_1="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_2="dhcp-option DOMAIN example.com"
-foreign_option_3="dhcp-option DOMAIN-SEARCH example.net"
+
+foreign_options=(
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.net"
+)
 
 TEST_TITLE="DNS Single Domain and Dual Search (with Order Check)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/05d_dns_domain_and_search_4.sh b/tests/05d_dns_domain_and_search_4.sh
index 1e863d8..414b4f9 100644
--- a/tests/05d_dns_domain_and_search_4.sh
+++ b/tests/05d_dns_domain_and_search_4.sh
@@ -1,9 +1,11 @@
 script_type="up"
-dev="tun05"
-foreign_option_1="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_2="dhcp-option DOMAIN example.co"
-foreign_option_3="dhcp-option DOMAIN example.com"
-foreign_option_4="dhcp-option DOMAIN-SEARCH example.net"
+
+foreign_options=(
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN example.co"
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.net"
+)
 
 TEST_TITLE="DNS Dual Domain and Dual Search (with Order Check)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/05e_dns_domain_alternate.sh b/tests/05e_dns_domain_alternate.sh
index 1733a3e..ff6de15 100644
--- a/tests/05e_dns_domain_alternate.sh
+++ b/tests/05e_dns_domain_alternate.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun05"
-foreign_option_1="dhcp-option ADAPTER_DOMAIN_SUFFIX example.org"
+
+foreign_options=("dhcp-option ADAPTER_DOMAIN_SUFFIX example.org")
 
 TEST_TITLE="DNS Doamin using ADAPTER_DOMAIN_SUFFIX"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/06a_single_domain_route.sh b/tests/06a_single_domain_route.sh
index 61275b0..ea94440 100644
--- a/tests/06a_single_domain_route.sh
+++ b/tests/06a_single_domain_route.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun06"
-foreign_option_1="dhcp-option DOMAIN-ROUTE example.com"
+
+foreign_options=("dhcp-option DOMAIN-ROUTE example.com")
 
 TEST_TITLE="Single DNS Route"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/06b_multiple_domain_routes.sh b/tests/06b_multiple_domain_routes.sh
index 0829512..14b0c73 100644
--- a/tests/06b_multiple_domain_routes.sh
+++ b/tests/06b_multiple_domain_routes.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun06"
-foreign_option_1="dhcp-option DOMAIN-ROUTE example.com"
-foreign_option_2="dhcp-option DOMAIN-ROUTE example.co"
-foreign_option_3="dhcp-option DOMAIN-ROUTE example.co.uk"
+
+foreign_options=(
+  "dhcp-option DOMAIN-ROUTE example.com"
+  "dhcp-option DOMAIN-ROUTE example.co"
+  "dhcp-option DOMAIN-ROUTE example.co.uk"
+)
 
 TEST_TITLE="Single DNS Route"
 TEST_BUSCTL_DOMAINS="3 example.com true example.co true example.co.uk true"
diff --git a/tests/07a_dns_domain_search_and_route_1.sh b/tests/07a_dns_domain_search_and_route_1.sh
index 0d1e8e0..d549e53 100644
--- a/tests/07a_dns_domain_search_and_route_1.sh
+++ b/tests/07a_dns_domain_search_and_route_1.sh
@@ -1,9 +1,11 @@
 script_type="up"
-dev="tun07"
-foreign_option_1="dhcp-option DOMAIN example.com"
-foreign_option_2="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_3="dhcp-option DOMAIN-SEARCH example.co.uk"
-foreign_option_4="dhcp-option DOMAIN-ROUTE example.net"
+
+foreign_options=(
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN-SEARCH example.co.uk"
+  "dhcp-option DOMAIN-ROUTE example.net"
+)
 
 TEST_TITLE="DNS Single Domain, Dual Search, Single Route"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/07b_dns_domain_search_and_route_2.sh b/tests/07b_dns_domain_search_and_route_2.sh
index 0281a29..2802c44 100644
--- a/tests/07b_dns_domain_search_and_route_2.sh
+++ b/tests/07b_dns_domain_search_and_route_2.sh
@@ -1,11 +1,13 @@
 script_type="up"
-dev="tun07"
-foreign_option_1="dhcp-option DOMAIN example.com"
-foreign_option_2="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_3="dhcp-option DOMAIN-ROUTE example.net"
-foreign_option_4="dhcp-option DOMAIN-SEARCH example.co.uk"
-foreign_option_5="dhcp-option DOMAIN example.co"
-foreign_option_6="dhcp-option DOMAIN-ROUTE example.uk.com"
+
+foreign_options=(
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN-ROUTE example.net"
+  "dhcp-option DOMAIN-SEARCH example.co.uk"
+  "dhcp-option DOMAIN example.co"
+  "dhcp-option DOMAIN-ROUTE example.uk.com"
+)
 
 TEST_TITLE="DNS Dual Domain, Dual Search, Dual Route (with Order Check)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/08a_dns_ipv4_and_domain.sh b/tests/08a_dns_ipv4_and_domain.sh
index 81b5c8e..4be7ec3 100644
--- a/tests/08a_dns_ipv4_and_domain.sh
+++ b/tests/08a_dns_ipv4_and_domain.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun08"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 2.34.56.7"
-foreign_option_3="dhcp-option DOMAIN example.com"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 2.34.56.7"
+  "dhcp-option DOMAIN example.com"
+)
 
 TEST_TITLE="DNS IPv4 Servers and Domain"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/08b_dns_ipv4_domain_and_search.sh b/tests/08b_dns_ipv4_domain_and_search.sh
index 327e048..af356f7 100644
--- a/tests/08b_dns_ipv4_domain_and_search.sh
+++ b/tests/08b_dns_ipv4_domain_and_search.sh
@@ -1,10 +1,12 @@
 script_type="up"
-dev="tun08"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 2.34.5.67"
-foreign_option_3="dhcp-option DOMAIN example.co.uk"
-foreign_option_4="dhcp-option DOMAIN-SEARCH example.co"
-foreign_option_5="dhcp-option DOMAIN-SEARCH example.com"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 2.34.5.67"
+  "dhcp-option DOMAIN example.co.uk"
+  "dhcp-option DOMAIN-SEARCH example.co"
+  "dhcp-option DOMAIN-SEARCH example.com"
+)
 
 TEST_TITLE="DNS IPv4 Servers, Domain, and Search"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/08b_dns_ipv4_domain_search_and_route.sh b/tests/08b_dns_ipv4_domain_search_and_route.sh
index 8b3aadc..73244bc 100644
--- a/tests/08b_dns_ipv4_domain_search_and_route.sh
+++ b/tests/08b_dns_ipv4_domain_search_and_route.sh
@@ -1,10 +1,12 @@
 script_type="up"
-dev="tun08"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 2.34.5.67"
-foreign_option_3="dhcp-option DOMAIN example.co.uk"
-foreign_option_4="dhcp-option DOMAIN-SEARCH example.co"
-foreign_option_5="dhcp-option DOMAIN-ROUTE example.com"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 2.34.5.67"
+  "dhcp-option DOMAIN example.co.uk"
+  "dhcp-option DOMAIN-SEARCH example.co"
+  "dhcp-option DOMAIN-ROUTE example.com"
+)
 
 TEST_TITLE="DNS IPv4 Servers, Domain, Search, and Route"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/10_single_ipv6_dns_full.sh b/tests/10_single_ipv6_dns_full.sh
index 69f3bbf..571d595 100644
--- a/tests/10_single_ipv6_dns_full.sh
+++ b/tests/10_single_ipv6_dns_full.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun10"
-foreign_option_1="dhcp-option DNS 1234:5678:90ab:cdef:4321:8765:ba09:fedc"
+
+foreign_options=("dhcp-option DNS 1234:5678:90ab:cdef:4321:8765:ba09:fedc")
 
 TEST_TITLE="Single IPv6 DNS Server (Full)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/11_single_ipv6_dns_simple.sh b/tests/11_single_ipv6_dns_simple.sh
index 283d2bb..3837537 100644
--- a/tests/11_single_ipv6_dns_simple.sh
+++ b/tests/11_single_ipv6_dns_simple.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun11"
-foreign_option_1="dhcp-option DNS 1234:567:89:0:ab:cde:f123:4567"
+
+foreign_options=("dhcp-option DNS 1234:567:89:0:ab:cde:f123:4567")
 
 TEST_TITLE="Single IPv6 DNS Server (Full, Simple)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/12_single_ipv6_dns_compact_1.sh b/tests/12_single_ipv6_dns_compact_1.sh
index d5a67f9..12b8f16 100644
--- a/tests/12_single_ipv6_dns_compact_1.sh
+++ b/tests/12_single_ipv6_dns_compact_1.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun12"
-foreign_option_1="dhcp-option DNS 1234:567:89:0:ab:cde:f123:4567"
+
+foreign_options=("dhcp-option DNS 1234:567:89:0:ab:cde:f123:4567")
 
 TEST_TITLE="Single IPv6 DNS Server (Compact) (Part 1)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/13_single_ipv6_dns_compact_2.sh b/tests/13_single_ipv6_dns_compact_2.sh
index 4dca1f4..fca63c1 100644
--- a/tests/13_single_ipv6_dns_compact_2.sh
+++ b/tests/13_single_ipv6_dns_compact_2.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun13"
-foreign_option_1="dhcp-option DNS 1234:567:89::ab:cdef"
+
+foreign_options=("dhcp-option DNS 1234:567:89::ab:cdef")
 
 TEST_TITLE="Single IPv6 DNS Server (Compact) (Part 2)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/14_single_ipv6_dns_compact_3.sh b/tests/14_single_ipv6_dns_compact_3.sh
index fa5d35b..e513472 100644
--- a/tests/14_single_ipv6_dns_compact_3.sh
+++ b/tests/14_single_ipv6_dns_compact_3.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun14"
-foreign_option_1="dhcp-option DNS 20a0::1"
+
+foreign_options=("dhcp-option DNS 20a0::1")
 
 TEST_TITLE="Single IPv6 DNS Server (Compact) (Part 3)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/15_single_ipv6_dns_localhost.sh b/tests/15_single_ipv6_dns_localhost.sh
index 27d4c9c..62540af 100644
--- a/tests/15_single_ipv6_dns_localhost.sh
+++ b/tests/15_single_ipv6_dns_localhost.sh
@@ -1,6 +1,6 @@
 script_type="up"
-dev="tun15"
-foreign_option_1="dhcp-option DNS ::1"
+
+foreign_options=("dhcp-option DNS ::1")
 
 TEST_TITLE="Single IPv6 DNS Server (Localhost)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/16_dual_ipv6_single_ipv4.sh b/tests/16_dual_ipv6_single_ipv4.sh
index 7500360..3f48b36 100644
--- a/tests/16_dual_ipv6_single_ipv4.sh
+++ b/tests/16_dual_ipv6_single_ipv4.sh
@@ -1,7 +1,9 @@
 script_type="up"
-dev="tun16"
-foreign_option_1="dhcp-option DNS 1234:567:89::ab:cdef"
-foreign_option_2="dhcp-option DNS 1.23.4.56"
+
+foreign_options=(
+  "dhcp-option DNS 1234:567:89::ab:cdef"
+  "dhcp-option DNS 1.23.4.56"
+)
 
 TEST_TITLE="Single IPv6 and Single IPv4 DNS Servers"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/16a_dual_ipv6_single_ipv4.sh b/tests/16a_dual_ipv6_single_ipv4.sh
index 38a96e8..6fe7dc3 100644
--- a/tests/16a_dual_ipv6_single_ipv4.sh
+++ b/tests/16a_dual_ipv6_single_ipv4.sh
@@ -1,7 +1,9 @@
 script_type="up"
-dev="tun16"
-foreign_option_1="dhcp-option DNS6 1234:567:89::ab:cdef"
-foreign_option_2="dhcp-option DNS 1.23.4.56"
+
+foreign_options=(
+  "dhcp-option DNS6 1234:567:89::ab:cdef"
+  "dhcp-option DNS 1.23.4.56"
+)
 
 TEST_TITLE="Single IPv6 and Single IPv4 DNS Servers (DNS6)"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/17_single_ipv6_single_ipv4.sh b/tests/17_single_ipv6_single_ipv4.sh
index e9ca3dc..9ab7a0c 100644
--- a/tests/17_single_ipv6_single_ipv4.sh
+++ b/tests/17_single_ipv6_single_ipv4.sh
@@ -1,8 +1,10 @@
 script_type="up"
-dev="tun17"
-foreign_option_1="dhcp-option DNS 1234:567:89::ab:cdef"
-foreign_option_2="dhcp-option DNS 1.23.4.56"
-foreign_option_3="dhcp-option DNS 20a0::1"
+
+foreign_options=(
+  "dhcp-option DNS 1234:567:89::ab:cdef"
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 20a0::1"
+)
 
 TEST_TITLE="Single IPv6 and Single IPv4 DNS Servers"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/18_dns_ipv4_ipv6_domain_and_search.sh b/tests/18_dns_ipv4_ipv6_domain_and_search.sh
index 4469b9a..782c3bf 100644
--- a/tests/18_dns_ipv4_ipv6_domain_and_search.sh
+++ b/tests/18_dns_ipv4_ipv6_domain_and_search.sh
@@ -1,11 +1,13 @@
 script_type="up"
-dev="tun18"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 2.34.56.7"
-foreign_option_3="dhcp-option DNS 1234:567:89::ab:cdef"
-foreign_option_4="dhcp-option DNS 1234:567:89::ba:cdef"
-foreign_option_5="dhcp-option DOMAIN example.com"
-foreign_option_6="dhcp-option DOMAIN-SEARCH example.co"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 2.34.56.7"
+  "dhcp-option DNS 1234:567:89::ab:cdef"
+  "dhcp-option DNS 1234:567:89::ba:cdef"
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.co"
+)
 
 TEST_TITLE="DNS IPv4 and IPv6 Servers, plus Domain and Search"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/19a_dns_invalid_ipv6.sh b/tests/19a_dns_invalid_ipv6.sh
index 8175220..224dc26 100644
--- a/tests/19a_dns_invalid_ipv6.sh
+++ b/tests/19a_dns_invalid_ipv6.sh
@@ -1,7 +1,6 @@
 source "${BASH_SOURCE[0]%/*}/helpers/ipv6.sh"
 
 script_type="up"
-dev="tun19"
 
 # busctl should not be called for any test in here
 TEST_BUSCTL_CALLED=0
diff --git a/tests/19b_dns_valid_ipv6.sh b/tests/19b_dns_valid_ipv6.sh
index 7690177..37fc7c1 100644
--- a/tests/19b_dns_valid_ipv6.sh
+++ b/tests/19b_dns_valid_ipv6.sh
@@ -1,7 +1,6 @@
 source "${BASH_SOURCE[0]%/*}/helpers/ipv6.sh"
 
 script_type="up"
-dev="tun19"
 
 TEST_BUSCTL_CALLED=1
 TEST_BUSCTL_DNS=SKIP
diff --git a/tests/19c_dns_invalid_ipv4.sh b/tests/19c_dns_invalid_ipv4.sh
index 293b771..a5ff107 100644
--- a/tests/19c_dns_invalid_ipv4.sh
+++ b/tests/19c_dns_invalid_ipv4.sh
@@ -1,7 +1,6 @@
 source "${BASH_SOURCE[0]%/*}/helpers/ipv4.sh"
 
 script_type="up"
-dev="tun19"
 
 # busctl should not be called for any test in here
 TEST_BUSCTL_CALLED=0
diff --git a/tests/20_dnssec_only.sh b/tests/20_dnssec_only.sh
index 80b8ee5..a99f6b8 100644
--- a/tests/20_dnssec_only.sh
+++ b/tests/20_dnssec_only.sh
@@ -1,5 +1,4 @@
 script_type="up"
-dev="tun20"
 
 TEST_BUSCTL_CALLED=1
 
diff --git a/tests/21_dnssec_invalid_options.sh b/tests/21_dnssec_invalid_options.sh
index 9f1c0b7..074a004 100644
--- a/tests/21_dnssec_invalid_options.sh
+++ b/tests/21_dnssec_invalid_options.sh
@@ -1,5 +1,4 @@
 script_type="up"
-dev="tun21"
 
 TEST_BUSCTL_CALLED=0
 EXPECT_FAILURE=1
diff --git a/tests/22_dns_dnssec_domain_and_search.sh b/tests/22_dns_dnssec_domain_and_search.sh
index 8f7bb29..96a8802 100644
--- a/tests/22_dns_dnssec_domain_and_search.sh
+++ b/tests/22_dns_dnssec_domain_and_search.sh
@@ -1,11 +1,13 @@
 script_type="up"
-dev="tun22"
-foreign_option_1="dhcp-option DNS 1.23.4.56"
-foreign_option_2="dhcp-option DNS 1234:567:89::ab:cdef"
-foreign_option_3="dhcp-option DOMAIN example.com"
-foreign_option_4="dhcp-option DOMAIN-SEARCH example.org"
-foreign_option_5="dhcp-option DOMAIN-ROUTE example.net"
-foreign_option_6="dhcp-option DNSSEC yes"
+
+foreign_options=(
+  "dhcp-option DNS 1.23.4.56"
+  "dhcp-option DNS 1234:567:89::ab:cdef"
+  "dhcp-option DOMAIN example.com"
+  "dhcp-option DOMAIN-SEARCH example.org"
+  "dhcp-option DOMAIN-ROUTE example.net"
+  "dhcp-option DNSSEC yes"
+)
 
 TEST_TITLE="DNS, DNSSEC, Domain, Search, and Route"
 TEST_BUSCTL_CALLED=1
diff --git a/tests/23_resolve1_dbus_presence.sh b/tests/23_resolve1_dbus_presence.sh
index cfca38d..b6e0966 100644
--- a/tests/23_resolve1_dbus_presence.sh
+++ b/tests/23_resolve1_dbus_presence.sh
@@ -1,5 +1,4 @@
 script_type="up"
-dev="tun23"
 
 TEST_TITLE='Error if "busctl status org.freedesktop.resolve1" fails'
 TEST_BUSCTL_CALLED=1
diff --git a/tests/24_custom_foreign_options.sh b/tests/24_custom_foreign_options.sh
index 4ff150e..3163e77 100644
--- a/tests/24_custom_foreign_options.sh
+++ b/tests/24_custom_foreign_options.sh
@@ -1,5 +1,4 @@
 script_type="up"
-dev="tun23"
 
 run_custom_foreign_option_test() {
   local TEST_TITLE foreign_option_1 suffix varname