diff --git a/user/advanced-configuration/config-files.md b/user/advanced-configuration/config-files.md
index ff0d57ce..ab43d6cd 100644
--- a/user/advanced-configuration/config-files.md
+++ b/user/advanced-configuration/config-files.md
@@ -44,7 +44,7 @@ The scripts here all run as root.
     The file is used only in a VM with PCI devices attached.
     Intended for use with problematic device drivers.
 
-- `/rw/config/network-hooks.d` - folder of scripts to be ran when configuring Qubes interfaces. For each script, the `command`, `vif`, `vif_type` and `ip` is passed as arguments (see `/etc/xen/scripts/vif-route-qubes`). For example, consider an PV AppVM `work` with IP `10.137.0.100` and `sys-firewall` as NetVM. Assuming it's Xen domain id is arbitrary `12` then, the following script located at `/rw/config/network-hooks.d/hook-100.sh` in `sys-firewall`:
+- In NetVMs/ProxyVMs, scripts placed in `/rw/config/network-hooks.d` will be ran when configuring Qubes interfaces. For each script, the `command`, `vif`, `vif_type` and `ip` is passed as arguments (see `/etc/xen/scripts/vif-route-qubes`). For example, consider an PV AppVM `work` with IP `10.137.0.100` and `sys-firewall` as NetVM. Assuming it's Xen domain id is arbitrary `12` then, the following script located at `/rw/config/network-hooks.d/hook-100.sh` in `sys-firewall`:
     ~~~
     #!/bin/bash
 
@@ -65,7 +65,7 @@ The scripts here all run as root.
     fi
     ~~~
 
-  will be executed with arguments `online vif12.0 vif 10.137.0.100` when starting `work`. Please note that in case of HVM, the vif type is `vif_ioemu`.
+  will be executed with arguments `online vif12.0 vif 10.137.0.100` when starting `work`. Please note that in case of HVM, the script will be called twice - once with vif_type `vif`, then with vif_type `vif_ioemu` (and different interface names). As long as the ioemu interface exists, it should be preferred (up to the hook script). When VM decide to use PV interface (vif_type `vif`), the ioemu one will be unplugged.
 
 Note that scripts need to be executable (chmod +x) to be used.