diff --git a/test/compilation/003-sanitizers b/test/compilation/003-sanitizers
index d2c0646..4648a64 100755
--- a/test/compilation/003-sanitizers
+++ b/test/compilation/003-sanitizers
@@ -33,6 +33,7 @@ for CC in gcc clang; do
 
     for extra_config_opts in \
       "--all-privops" \
+      "--disable-ipv6" \
       "--disable-scfilter" \
       "--without-gnutls" \
       "--without-nettle" \
diff --git a/test/simulation/110-chronyc b/test/simulation/110-chronyc
index e625328..96c6503 100755
--- a/test/simulation/110-chronyc
+++ b/test/simulation/110-chronyc
@@ -109,9 +109,7 @@ for chronyc_conf in \
 	"allow 3.4.5" \
 	"allow 6.7.8/22" \
 	"allow 6.7.8.9/22" \
-	"allow 2001:db8::/32" \
 	"allow 0/0" \
-	"allow ::/0" \
 	"allow" \
 	"allow all 10/24" \
 	"authdata" \