diff --git a/testcode/do-tests.sh b/testcode/do-tests.sh
index 4a459d575..3fa79f70a 100755
--- a/testcode/do-tests.sh
+++ b/testcode/do-tests.sh
@@ -7,7 +7,7 @@ NEED_XXD='fwd_compress_c00c.tpkg fwd_zero.tpkg'
 NEED_NC='fwd_compress_c00c.tpkg fwd_zero.tpkg'
 NEED_CURL='06-ianaports.tpkg'
 NEED_WHOAMI='07-confroot.tpkg'
-NEED_IPV6='fwd_ancil.tpkg fwd_tcp_tc6.tpkg'
+NEED_IPV6='fwd_ancil.tpkg fwd_tcp_tc6.tpkg stub_udp6.tpkg'
 NEED_NOMINGW='tcp_sigpipe.tpkg 07-confroot.tpkg 08-host-lib.tpkg fwd_ancil.tpkg'
 
 # test for ipv6, uses streamptcp peculiarity.
diff --git a/testdata/stub_udp6.tpkg b/testdata/stub_udp6.tpkg
new file mode 100644
index 000000000..6790f38f7
Binary files /dev/null and b/testdata/stub_udp6.tpkg differ