diff --git a/src/constants.js b/src/constants.js
index 135082882..e78d2e20a 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -34,9 +34,9 @@ exports = module.exports = {
 
     // docker IPs
     DOCKER_IPv4_SUBNET: '172.18.0.0/16',
-    DOCKER_IPv4_RANGE: '172.18.0.0/20',
+    DOCKER_IPv4_RANGE: '172.18.0.0/20', // addresses are dynamically allocated within this range (172.18.0.0-172.18.15.255)
     DOCKER_IPv4_GATEWAY: '172.18.0.1',
-    APPS_IPv4_START: '172.18.16.1',
+    APPS_IPv4_START: '172.18.16.1', // after DOCKER_IPv4_RANGE
     APPS_IPv4_END: '172.18.20.255',
     // these are hardcoded to allow connections from outside. this is not in "172.18.0.xx" since docker starts allocating from there
     MYSQL_SERVICE_IPv4: '172.18.30.1',