diff --git a/ci/asan_leak_suppression/regression.txt b/ci/asan_leak_suppression/regression.txt
index 0ad5f92f070..4f750d01650 100644
--- a/ci/asan_leak_suppression/regression.txt
+++ b/ci/asan_leak_suppression/regression.txt
@@ -17,3 +17,4 @@ leak:RegressionTest_Hdrs
 leak:RegressionTest_SDK_API_TSPortDescriptor
 leak:RegressionTest_HostDBProcessor
 leak:RegressionTest_DNS
+leak:RegressionTest_UDPNet_echo
diff --git a/iocore/net/Makefile.am b/iocore/net/Makefile.am
index edc95af8425..542924cdd6a 100644
--- a/iocore/net/Makefile.am
+++ b/iocore/net/Makefile.am
@@ -36,6 +36,7 @@ AM_CPPFLAGS += \
 	@SWOC_INCLUDES@
 
 TESTS = $(check_PROGRAMS)
+TESTS_ENVIRONMENT = LSAN_OPTIONS=suppressions=$(abs_top_srcdir)/ci/asan_leak_suppression/regression.txt
 
 check_PROGRAMS = test_certlookup test_UDPNet test_libinknet
 noinst_LIBRARIES = libinknet.a