From 34ec37a00e4d2b8857b1e127477e7f504e4f2e5a Mon Sep 17 00:00:00 2001
From: Kroese <kroese@users.noreply.github.com>
Date: Thu, 27 Apr 2023 19:32:59 +0200
Subject: [PATCH] Check NET_ADMIN

---
 run/network.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/run/network.sh b/run/network.sh
index 61033ed..a7e047f 100644
--- a/run/network.sh
+++ b/run/network.sh
@@ -41,7 +41,11 @@ configureDHCP() {
 
   echo "INFO: Acquiring an IP address via DHCP using MAC address ${VM_NET_MAC}..."
 
-  ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge || true
+  if !  ip link add link "${VM_NET_DEV}" name "${VM_NET_TAP}" address "${VM_NET_MAC}" type macvtap mode bridge > /dev/null 2>&1 ; then
+    echo -n "ERROR: Capability NET_ADMIN has not been set. Please add the "
+    echo "following docker setting to your container: --cap-add NET_ADMIN" && exit 16
+  fi
+  
   ip link set "${VM_NET_TAP}" up
 
   ip a flush "${VM_NET_DEV}"
@@ -52,7 +56,7 @@ configureDHCP() {
   if [[ "${DHCP_IP}" == [0-9.]* ]]; then
     echo "INFO: Successfully acquired IP ${DHCP_IP} from the DHCP server..."
   else
-    echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 16
+    echo "ERROR: Cannot acquire an IP address from the DHCP server" && exit 17
   fi
 
   ip address flush "${VM_NET_TAP}"