diff --git a/docs.it4i/anselm/software/virtualization.md b/docs.it4i/anselm/software/virtualization.md
index 109a771b0c5307471a0131e61298eae9e242467f..6a89671e49c91f444fcf7d7b74851e12fed48a8b 100644
--- a/docs.it4i/anselm/software/virtualization.md
+++ b/docs.it4i/anselm/software/virtualization.md
@@ -324,6 +324,12 @@ Both user and vde network back-end have low performance. For fast interconnect (
 
 Cluster Anselm provides TAP device tap0 for your job. TAP interconnect does not provide any services (like NAT, DHCP, DNS, SMB, etc.) just raw networking, so you should provide your services if you need them.
 
+To enable TAP interconect feature you need to specify virt_network=True PBS resource at job submit.
+
+```console
+$ qsub ... -l virt_network=True
+```
+
 Run qemu with TAP network back-end:
 
 ```console