diff --git a/tetheroffload/control/1.0/vts/functional/VtsHalTetheroffloadControlV1_0TargetTest.cpp b/tetheroffload/control/1.0/vts/functional/VtsHalTetheroffloadControlV1_0TargetTest.cpp
index d572728..d2fa92d 100644
--- a/tetheroffload/control/1.0/vts/functional/VtsHalTetheroffloadControlV1_0TargetTest.cpp
+++ b/tetheroffload/control/1.0/vts/functional/VtsHalTetheroffloadControlV1_0TargetTest.cpp
@@ -26,6 +26,7 @@
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netlink.h>
 #include <log/log.h>
+#include <net/if.h>
 #include <sys/socket.h>
 #include <unistd.h>
 #include <set>
@@ -52,6 +53,8 @@
     True = 1,
 };
 
+constexpr const char* TEST_IFACE = "rmnet_data0";
+
 // We use #defines here so as to get local lamba captures and error message line numbers
 #define ASSERT_TRUE_CALLBACK                            \
     [&](bool success, std::string errMsg) {             \
@@ -240,6 +243,18 @@
     stopOffload(ExpectBoolean::False);
 }
 
+// Check whether the specified interface is up.
+bool interfaceIsUp(const char* name) {
+    if (name == nullptr) return false;
+    struct ifreq ifr = {};
+    strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+    int sock = socket(AF_INET6, SOCK_DGRAM, 0);
+    if (sock == -1) return false;
+    int ret = ioctl(sock, SIOCGIFFLAGS, &ifr, sizeof(ifr));
+    close(sock);
+    return (ret == 0) && (ifr.ifr_flags & IFF_UP);
+}
+
 // Check that calling stopOffload() after a complete init/stop cycle returns false.
 TEST_F(OffloadControlHidlTestBase, AdditionalStopsWithInitReturnFalse) {
     initOffload(true);
@@ -249,8 +264,11 @@
     const hidl_string v4Gw("192.0.0.1");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1"), hidl_string("fe80::db8:2")};
     const Return<void> upstream =
-        control->setUpstreamParameters("rmnet_data0", v4Addr, v4Gw, v6Gws, ASSERT_TRUE_CALLBACK);
+        control->setUpstreamParameters(TEST_IFACE, v4Addr, v4Gw, v6Gws, ASSERT_TRUE_CALLBACK);
     EXPECT_TRUE(upstream.isOk());
+    if (!interfaceIsUp(TEST_IFACE)) {
+        return;
+    }
     stopOffload(ExpectBoolean::True);  // balance out initOffload(true)
     stopOffload(ExpectBoolean::False);
     stopOffload(ExpectBoolean::False);
@@ -266,14 +284,14 @@
 // Check that calling getForwardedStats() without first having called initOffload()
 // returns zero bytes statistics.
 TEST_F(OffloadControlHidlTestBase, GetForwardedStatsWithoutInitReturnsZeroValues) {
-    const hidl_string upstream("rmnet_data0");
+    const hidl_string upstream(TEST_IFACE);
     const Return<void> ret = control->getForwardedStats(upstream, ASSERT_ZERO_BYTES_CALLBACK);
     EXPECT_TRUE(ret.isOk());
 }
 
 // Check that calling setDataLimit() without first having called initOffload() returns false.
 TEST_F(OffloadControlHidlTestBase, SetDataLimitWithoutInitReturnsFalse) {
-    const hidl_string upstream("rmnet_data0");
+    const hidl_string upstream(TEST_IFACE);
     const uint64_t limit = 5000ULL;
     const Return<void> ret = control->setDataLimit(upstream, limit, ASSERT_FALSE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -282,7 +300,7 @@
 // Check that calling setUpstreamParameters() without first having called initOffload()
 // returns false.
 TEST_F(OffloadControlHidlTestBase, SetUpstreamParametersWithoutInitReturnsFalse) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("192.0.2.0/24");
     const hidl_string v4Gw("192.0.2.1");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1")};
@@ -294,7 +312,7 @@
 // Check that calling addDownstream() with an IPv4 prefix without first having called
 // initOffload() returns false.
 TEST_F(OffloadControlHidlTestBase, AddIPv4DownstreamWithoutInitReturnsFalse) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string prefix("192.0.2.0/24");
     const Return<void> ret = control->addDownstream(iface, prefix, ASSERT_FALSE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -303,7 +321,7 @@
 // Check that calling addDownstream() with an IPv6 prefix without first having called
 // initOffload() returns false.
 TEST_F(OffloadControlHidlTestBase, AddIPv6DownstreamWithoutInitReturnsFalse) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string prefix("2001:db8::/64");
     const Return<void> ret = control->addDownstream(iface, prefix, ASSERT_FALSE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -312,7 +330,7 @@
 // Check that calling removeDownstream() with an IPv4 prefix without first having called
 // initOffload() returns false.
 TEST_F(OffloadControlHidlTestBase, RemoveIPv4DownstreamWithoutInitReturnsFalse) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string prefix("192.0.2.0/24");
     const Return<void> ret = control->removeDownstream(iface, prefix, ASSERT_FALSE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -321,7 +339,7 @@
 // Check that calling removeDownstream() with an IPv6 prefix without first having called
 // initOffload() returns false.
 TEST_F(OffloadControlHidlTestBase, RemoveIPv6DownstreamWithoutInitReturnsFalse) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string prefix("2001:db8::/64");
     const Return<void> ret = control->removeDownstream(iface, prefix, ASSERT_FALSE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -394,10 +412,10 @@
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, GetForwardedStatsDummyIface) {
-    const hidl_string upstream("rmnet_data0");
+    const hidl_string upstream(TEST_IFACE);
     const Return<void> ret = control->getForwardedStats(upstream, ASSERT_ZERO_BYTES_CALLBACK);
     EXPECT_TRUE(ret.isOk());
 }
@@ -414,19 +432,19 @@
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetDataLimitNonZeroOk) {
-    const hidl_string upstream("rmnet_data0");
+    const hidl_string upstream(TEST_IFACE);
     const uint64_t limit = 5000ULL;
     const Return<void> ret = control->setDataLimit(upstream, limit, ASSERT_TRUE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetDataLimitZeroOk) {
-    const hidl_string upstream("rmnet_data0");
+    const hidl_string upstream(TEST_IFACE);
     const uint64_t limit = 0ULL;
     const Return<void> ret = control->setDataLimit(upstream, limit, ASSERT_TRUE_CALLBACK);
     EXPECT_TRUE(ret.isOk());
@@ -436,10 +454,10 @@
  * Tests for IOffloadControl::setUpstreamParameters().
  */
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersIPv6OnlyOk) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("");
     const hidl_string v4Gw("");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1"), hidl_string("fe80::db8:2")};
@@ -448,10 +466,10 @@
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersAlternateIPv6OnlyOk) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr;
     const hidl_string v4Gw;
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1"), hidl_string("fe80::db8:3")};
@@ -460,10 +478,10 @@
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersIPv4OnlyOk) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("192.0.2.2");
     const hidl_string v4Gw("192.0.2.1");
     const vector<hidl_string> v6Gws{};
@@ -472,10 +490,10 @@
     EXPECT_TRUE(ret.isOk());
 }
 
-// The "rmnet_data0" is presumed to exist on the device and be up. No packets
+// TEST_IFACE is presumed to exist on the device and be up. No packets
 // are ever actually caused to be forwarded.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersIPv4v6Ok) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("192.0.2.2");
     const hidl_string v4Gw("192.0.2.1");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1"), hidl_string("fe80::db8:2")};
@@ -511,7 +529,7 @@
 
 // Test that setUpstreamParameters() fails when given unparseable IPv4 addresses.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersInvalidIPv4AddrFails) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Gw("192.0.2.1");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1")};
     for (const auto& bogus : {"invalid", "192.0.2"}) {
@@ -525,7 +543,7 @@
 
 // Test that setUpstreamParameters() fails when given unparseable IPv4 gateways.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersInvalidIPv4GatewayFails) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("192.0.2.2");
     const vector<hidl_string> v6Gws{hidl_string("fe80::db8:1")};
     for (const auto& bogus : {"invalid", "192.0.2"}) {
@@ -539,7 +557,7 @@
 
 // Test that setUpstreamParameters() fails when given unparseable IPv6 gateways.
 TEST_F(OffloadControlHidlTest, SetUpstreamParametersBadIPv6GatewaysFail) {
-    const hidl_string iface("rmnet_data0");
+    const hidl_string iface(TEST_IFACE);
     const hidl_string v4Addr("192.0.2.2");
     const hidl_string v4Gw("192.0.2.1");
     for (const auto& bogus : {"", "invalid", "fe80::bogus", "192.0.2.66"}) {