diff --git a/sshuttle/methods/pf.py b/sshuttle/methods/pf.py
index 32987ed..e73542d 100644
--- a/sshuttle/methods/pf.py
+++ b/sshuttle/methods/pf.py
@@ -262,7 +262,7 @@ class OpenBsd(Generic):
                         ("proto_variant", c_uint8),
                         ("direction", c_uint8)]
 
-        self.pfioc_rule = c_char * 3416
+        self.pfioc_rule = c_char * 3424
         self.pfioc_natlook = pfioc_natlook
         super(OpenBsd, self).__init__()
 
diff --git a/tests/client/test_methods_pf.py b/tests/client/test_methods_pf.py
index 36803ac..42f1828 100644
--- a/tests/client/test_methods_pf.py
+++ b/tests/client/test_methods_pf.py
@@ -403,8 +403,8 @@ def test_setup_firewall_openbsd(mock_pf_get_dev, mock_ioctl, mock_pfctl):
         None)
 
     assert mock_ioctl.mock_calls == [
-        call(mock_pf_get_dev(), 0xcd58441a, ANY),
-        call(mock_pf_get_dev(), 0xcd58441a, ANY),
+        call(mock_pf_get_dev(), 0xcd60441a, ANY),
+        call(mock_pf_get_dev(), 0xcd60441a, ANY),
     ]
     assert mock_pfctl.mock_calls == [
         call('-s Interfaces -i lo -v'),
@@ -451,8 +451,8 @@ def test_setup_firewall_openbsd(mock_pf_get_dev, mock_ioctl, mock_pfctl):
         False,
         None)
     assert mock_ioctl.mock_calls == [
-        call(mock_pf_get_dev(), 0xcd58441a, ANY),
-        call(mock_pf_get_dev(), 0xcd58441a, ANY),
+        call(mock_pf_get_dev(), 0xcd60441a, ANY),
+        call(mock_pf_get_dev(), 0xcd60441a, ANY),
     ]
     assert mock_pfctl.mock_calls == [
         call('-s Interfaces -i lo -v'),