Merge pull request #2663 from edx/e0d/fix-mtu

Fixing MTU setting

playbooks/roles/aws/tasks/main.yml

@@ -34,10 +34,10 @@
   when: ansible_distribution in common_debian_variants
 
 - lineinfile: >
-    dest=/etc/dhcp/dhclient.conf
-    regexp="^supercede interfact-mtu"
-    line="supercede interface-mtu 1500;"
-    insertbefore="^request"
+    dest=/etc/network/interfaces.d/eth0.cfg
+    regexp="^post-up /sbin/ifconfig eth0 mtu 1500"
+    line="post-up /sbin/ifconfig eth0 mtu 1500"
+    insertafter="^iface"
   when: ansible_distribution in common_debian_variants
 
 #