diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index 4fa275f08e28..8488f72c4cde 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -4383,7 +4383,7 @@ em_if_get_counter(if_ctx_t ctx, ift_counter cnt)
  * @ctx: iflib context
  * @event: event code to check
  *
- * Defaults to returning true for unknown events.
+ * Defaults to returning false for unknown events.
  *
  * @returns true if iflib needs to reinit the interface
  */
@@ -4392,9 +4392,8 @@ em_if_needs_restart(if_ctx_t ctx __unused, enum iflib_restart_event event)
 {
 	switch (event) {
 	case IFLIB_RESTART_VLAN_CONFIG:
-		return (false);
 	default:
-		return (true);
+		return (false);
 	}
 }
 
diff --git a/sys/dev/igc/if_igc.c b/sys/dev/igc/if_igc.c
index c59e379ca2c8..a0f0906e30da 100644
--- a/sys/dev/igc/if_igc.c
+++ b/sys/dev/igc/if_igc.c
@@ -2402,7 +2402,7 @@ igc_if_get_counter(if_ctx_t ctx, ift_counter cnt)
  * @ctx: iflib context
  * @event: event code to check
  *
- * Defaults to returning true for unknown events.
+ * Defaults to returning false for unknown events.
  *
  * @returns true if iflib needs to reinit the interface
  */
@@ -2411,9 +2411,8 @@ igc_if_needs_restart(if_ctx_t ctx __unused, enum iflib_restart_event event)
 {
 	switch (event) {
 	case IFLIB_RESTART_VLAN_CONFIG:
-		return (false);
 	default:
-		return (true);
+		return (false);
 	}
 }
 
diff --git a/sys/dev/ixgbe/if_ix.c b/sys/dev/ixgbe/if_ix.c
index e8fb5de493ce..17f1f73a526e 100644
--- a/sys/dev/ixgbe/if_ix.c
+++ b/sys/dev/ixgbe/if_ix.c
@@ -1256,7 +1256,7 @@ ixgbe_if_i2c_req(if_ctx_t ctx, struct ifi2creq *req)
  * @ctx: iflib context
  * @event: event code to check
  *
- * Defaults to returning true for unknown events.
+ * Defaults to returning false for unknown events.
  *
  * @returns true if iflib needs to reinit the interface
  */
@@ -1265,9 +1265,8 @@ ixgbe_if_needs_restart(if_ctx_t ctx __unused, enum iflib_restart_event event)
 {
 	switch (event) {
 	case IFLIB_RESTART_VLAN_CONFIG:
-		return (false);
 	default:
-		return (true);
+		return (false);
 	}
 }
 
diff --git a/sys/dev/mgb/if_mgb.c b/sys/dev/mgb/if_mgb.c
index 4a23ef3cdcaf..6fafb303143c 100644
--- a/sys/dev/mgb/if_mgb.c
+++ b/sys/dev/mgb/if_mgb.c
@@ -251,6 +251,7 @@ static device_method_t mgb_iflib_methods[] = {
 	 */
 	DEVMETHOD(ifdi_vlan_register, mgb_vlan_register),
 	DEVMETHOD(ifdi_vlan_unregister, mgb_vlan_unregister),
+	DEVMETHOD(ifdi_needs_restart, mgb_if_needs_restart),
 
 	/*
 	 * Needed for WOL support
diff --git a/sys/net/ifdi_if.m b/sys/net/ifdi_if.m
index a9c285c4dd31..d52bf66bd110 100644
--- a/sys/net/ifdi_if.m
+++ b/sys/net/ifdi_if.m
@@ -115,7 +115,7 @@ CODE {
 	static bool
 	null_needs_restart(if_ctx_t _ctx __unused, enum iflib_restart_event _event __unused)
 	{
-		return (true);
+		return (false);
 	}
 };