1 files changed, 5 insertions, 1 deletions
diff --git a/cloudinit/sources/DataSourceCloudSigma.py b/cloudinit/sources/DataSourceCloudSigma.py
index c816f349..2955d3f0 100644
--- a/cloudinit/sources/DataSourceCloudSigma.py
+++ b/cloudinit/sources/DataSourceCloudSigma.py
@@ -7,7 +7,7 @@
 from base64 import b64decode
 import re
 
-from cloudinit.cs_utils import Cepko
+from cloudinit.cs_utils import Cepko, SERIAL_PORT
 
 from cloudinit import log as logging
 from cloudinit import sources
@@ -84,6 +84,10 @@ class DataSourceCloudSigma(sources.DataSource):
 
         return True
 
+    def _get_subplatform(self):
+        """Return the subplatform metadata source details."""
+        return 'cepko (%s)' % SERIAL_PORT
+
     def get_hostname(self, fqdn=False, resolve_ip=False, metadata_only=False):
         """
         Cleans up and uses the server's name if the latter is set. Otherwise