diff --git a/lab-pipeline.groovy b/lab-pipeline.groovy
index 3e251c4..2337f1e 100644
--- a/lab-pipeline.groovy
+++ b/lab-pipeline.groovy
@@ -44,8 +44,9 @@
  *   CALICO_CNI_IMAGE            Docker repository and tag for calico CNI image
  *   CALICO_NODE_IMAGE           Docker repository and tag for calico node image
  *   CALICOCTL_IMAGE             Docker repository and tag for calicoctl image
+ *   MTU                         MTU for Calico
  *   NETCHECKER_AGENT_IMAGE      Docker repository and tag for netchecker agent image
- *   NETCHECKER_SERVER_IMAGE      Docker repository and tag for netchecker server image
+ *   NETCHECKER_SERVER_IMAGE     Docker repository and tag for netchecker server image
  *
  */
 
@@ -183,6 +184,9 @@
                     if (env.getEnvironment().containsKey('KUBERNETES_HYPERKUBE_IMAGE')) {
                         salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'reclass.cluster_meta_set', 'kubernetes_hyperkube_image', KUBERNETES_HYPERKUBE_IMAGE)
                     }
+                    if (env.getEnvironment().containsKey('MTU')) {
+                        salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'reclass.cluster_meta_set', 'kubernetes_mtu', MTU}
+                    }
                     // Overwrite Calico vars if specified
                     if (env.getEnvironment().containsKey('CALICO_CNI_IMAGE')) {
                         salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'reclass.cluster_meta_set', 'kubernetes_calico_cni_image', CALICO_CNI_IMAGE)