diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localtcp.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localtcp.ksh
index c18dc7625d8e..2e3ffec52ba6 100755
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localtcp.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localtcp.ksh
@@ -73,6 +73,7 @@ cat > test.pl <<-EOPERL
 	    Timeout => 3);
 	die "Could not connect to host $local port $tcpport" unless \$s;
 	close \$s;
+	sleep(2);
 EOPERL
 
 $dtrace -c '/usr/bin/perl test.pl' -qs /dev/stdin <<EODTRACE
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remotetcp.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remotetcp.ksh
index e513ace0be64..65ede66f5fe9 100755
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remotetcp.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remotetcp.ksh
@@ -76,6 +76,7 @@ cat > test.pl <<-EOPERL
 	    Timeout => 3);
 	die "Could not connect to host $dest port $tcpport" unless \$s;
 	close \$s;
+	sleep(2);
 EOPERL
 
 $dtrace -c '/usr/bin/perl test.pl' -qs /dev/stdin <<EODTRACE
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.localtcpstate.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.localtcpstate.ksh
index 5e0c7474065f..9668ad5868b8 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.localtcpstate.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.localtcpstate.ksh
@@ -79,6 +79,7 @@ cat > test.pl <<-EOPERL
 	die "Could not connect to host $local port $tcpport" unless \$s;
 	print \$s "testing state machine transitions";
 	close \$s;
+	sleep(2);
 EOPERL
 
 $dtrace -c '/usr/bin/perl test.pl' -qs /dev/stdin <<EODTRACE
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.remotetcpstate.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.remotetcpstate.ksh
index 4bf4362b61d2..67712803d978 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.remotetcpstate.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.remotetcpstate.ksh
@@ -84,6 +84,7 @@ cat > test.pl <<-EOPERL
 	die "Could not connect to host $dest port $tcpport" unless \$s;
 	print \$s "testing state machine transitions";
 	close \$s;
+	sleep(2);
 EOPERL
 
 $dtrace -c '/usr/bin/perl test.pl' -qs /dev/stdin <<EODTRACE