diff options
| -rw-r--r-- | cloudinit/net/sysconfig.py | 6 | ||||
| -rw-r--r-- | tests/unittests/test_net.py | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/cloudinit/net/sysconfig.py b/cloudinit/net/sysconfig.py index a550f97c..f5727969 100644 --- a/cloudinit/net/sysconfig.py +++ b/cloudinit/net/sysconfig.py @@ -484,7 +484,11 @@ class Renderer(renderer.Renderer): content.add_nameserver(nameserver) for searchdomain in network_state.dns_searchdomains: content.add_search_domain(searchdomain) - return "\n".join([_make_header(';'), str(content)]) + header = _make_header(';') + content_str = str(content) + if not content_str.startswith(header): + content_str = header + '\n' + content_str + return content_str @staticmethod def _render_networkmanager_conf(network_state): diff --git a/tests/unittests/test_net.py b/tests/unittests/test_net.py index e49abcc4..4653be1a 100644 --- a/tests/unittests/test_net.py +++ b/tests/unittests/test_net.py @@ -1683,6 +1683,9 @@ USERCTL=no ns = network_state.parse_net_config_data(network_cfg, skip_broken=False) renderer = sysconfig.Renderer() + # render a multiple times to simulate reboots + renderer.render_network_state(ns, render_dir) + renderer.render_network_state(ns, render_dir) renderer.render_network_state(ns, render_dir) for fn, expected_content in os_sample.get('out_sysconfig', []): with open(os.path.join(render_dir, fn)) as fh: |