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-rw-r--r--nixos/lib/test-driver/test-driver.pl2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/lib/test-driver/test-driver.pl b/nixos/lib/test-driver/test-driver.pl
index 854be99552a0..a3354fb0e1eb 100644
--- a/nixos/lib/test-driver/test-driver.pl
+++ b/nixos/lib/test-driver/test-driver.pl
@@ -35,7 +35,7 @@ foreach my $vlan (split / /, $ENV{VLANS} || "") {
     if ($pid == 0) {
         dup2(fileno($pty->slave), 0);
         dup2(fileno($stdoutW), 1);
-        exec "vde_switch -s $socket" or _exit(1);
+        exec "vde_switch -s $socket --dirmode 0700" or _exit(1);
     }
     close $stdoutW;
     print $pty "version\n";