diff --git a/maas/region/boot_sources/maas_ephemeral_v3/bss_xenial.yml b/maas/region/boot_sources/maas_ephemeral_v3/bss_xenial.yml
new file mode 100644
index 0000000..a1d1620
--- /dev/null
+++ b/maas/region/boot_sources/maas_ephemeral_v3/bss_xenial.yml
@@ -0,0 +1,17 @@
+parameters:
+  _param:
+    apt_mk_version: stable
+    maas_region_boot_sources_maas_ephemeral_v3_version: ${_param:apt_mk_version}
+    maas_region_boot_sources_maas_ephemeral_v3_host_url: "http://mirror.mirantis.com/"
+    # http://mirror.mirantis.com/nightly/maas-ephemeral-v3/
+    maas_region_boot_sources_maas_ephemeral_v3_url: "${_param:linux_system_repo_maas_ephemeral_v3_host_url}/${_param:apt_mk_version}/maas-ephemeral-v3/"
+  maas:
+    region:
+      boot_sources_selections:
+        xenial:
+          url: "${_param:maas_region_boot_sources_maas_ephemeral_v3_url}"
+          os: "ubuntu"
+          release: "xenial"
+          arches: "amd64"
+          subarches: '"*"'
+          labels: '"*"'
diff --git a/maas/region/boot_sources/maas_ephemeral_v3/init.yml b/maas/region/boot_sources/maas_ephemeral_v3/init.yml
new file mode 100644
index 0000000..965f333
--- /dev/null
+++ b/maas/region/boot_sources/maas_ephemeral_v3/init.yml
@@ -0,0 +1,14 @@
+parameters:
+  _param:
+    apt_mk_version: stable
+    maas_region_boot_sources_maas_ephemeral_v3_version: ${_param:apt_mk_version}
+    maas_region_boot_sources_maas_ephemeral_v3_host_url: "http://mirror.mirantis.com/"
+    # http://mirror.mirantis.com/nightly/maas-ephemeral-v3/
+    maas_region_boot_sources_maas_ephemeral_v3_url: "${_param:linux_system_repo_maas_ephemeral_v3_host_url}/${_param:apt_mk_version}/maas-ephemeral-v3/"
+  maas:
+    region:
+      boot_sources_delete_all_others: true
+      boot_sources:
+        resources_mirror:
+          url: ${_param:maas_region_boot_sources_maas_ephemeral_v3_url}
+          keyring_file: /usr/share/keyrings/ubuntu-cloudimage-keyring.gpg