diff --git a/defaults/main.yml b/defaults/main.yml
index 0b35e12..159018d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -2,5 +2,6 @@
 
 ka_master_uri: "ws://127.0.0.1:8080"
 ka_token: "secret_token"
+ka_peer_interface: "eth1"
 
 ka_config_path: "{{ (ansible_distribution_release == 'xenial') | ternary('/etc/kontena-agent.env', '/etc/default/kontena-agent') }}"
diff --git a/tasks/main.yml b/tasks/main.yml
index 89bf41a..caf9bf6 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -39,6 +39,12 @@
     regexp: "^KONTENA_TOKEN="
     line: "KONTENA_TOKEN={{ ka_token }}"
 
+- name: Setup Peer Interface
+  lineinfile:
+    path: "{{ ka_config_path }}"
+    regexp: "^KONTENA_PEER_INTERFACE="
+    line: "KONTENA_PEER_INTERFACE={{ ka_peer_interface|default('eth1') }}"
+
 - name: Restart Kontena Agent
   when: ansible_distribution_release == "xenial"
   systemd: