diff --git a/intest/hippo1.yaml b/intest/hippo1.yaml
index 1bdfa0c..4f8d059 100644
--- a/intest/hippo1.yaml
+++ b/intest/hippo1.yaml
@@ -73,6 +73,7 @@ loopbacks:
     lcp: "lo0"
     addresses: [ 10.0.0.1/32, 2001:db8::1/128 ]
   loop1:
+    mtu: 2000
     lcp: "bvi1"
     addresses: [ 10.0.1.1/24, 2001:db8:1::1/64 ]
 
diff --git a/intest/hippo12.yaml b/intest/hippo12.yaml
index b194243..6cf930f 100644
--- a/intest/hippo12.yaml
+++ b/intest/hippo12.yaml
@@ -72,6 +72,7 @@ loopbacks:
     lcp: "lo0"
     addresses: [ 10.0.0.1/32, 2001:db8::1/128 ]
   loop1:
+    mtu: 2000
     lcp: "bvi1"
     addresses: [ 10.0.1.1/24, 2001:db8:1::1/64 ]
 
diff --git a/intest/hippo13.yaml b/intest/hippo13.yaml
index 9bb3efc..28a9d0b 100644
--- a/intest/hippo13.yaml
+++ b/intest/hippo13.yaml
@@ -79,6 +79,7 @@ loopbacks:
     lcp: "lo0"
     addresses: [ 10.0.0.1/32, 2001:db8::1/128 ]
   loop1:
+    mtu: 2000
     lcp: "bvi1"
     addresses: [ 10.0.1.1/24, 2001:db8:1::1/64 ]
 
diff --git a/intest/hippo8.yaml b/intest/hippo8.yaml
index ed8e16d..ed56410 100644
--- a/intest/hippo8.yaml
+++ b/intest/hippo8.yaml
@@ -44,6 +44,7 @@ interfaces:
 
 loopbacks:
   loop11:
+    mtu: 3000
     lcp: "bvi11"
     addresses: [ 2001:db8:1::1/64, 192.0.2.1/30 ]
 
diff --git a/intest/hippo9.yaml b/intest/hippo9.yaml
index 0cd71a5..1a83d97 100644
--- a/intest/hippo9.yaml
+++ b/intest/hippo9.yaml
@@ -68,6 +68,7 @@ loopbacks:
     addresses: [ 192.0.2.1/30 ]
   loop2:
     lcp: "bvi2"
+    mtu: 2000
     addresses: [ 192.0.2.5/30 ]
 
 bridgedomains:
diff --git a/intest/intest.sh b/intest/intest.sh
index d28967d..2aff749 100755
--- a/intest/intest.sh
+++ b/intest/intest.sh
@@ -7,7 +7,7 @@
 ## here should not be used although they can be a source of config inspiration :)
 
 ## Run me:
-# ./intest.sh 2>&1 | tee -a intest.out
+# ./intest.sh 2>&1 | tee intest.out
 
   for i in hippo[0-9]*.yaml; do
     echo "Clearing: Moving to hippo-empty.yaml"