Make dhclient persistent, so transient network failures don't make nodes unreachable.

diff --git a/plnet.py b/plnet.py
index c012067..c420203 100755 (executable)
--- a/plnet.py
+++ b/plnet.py
@@ -56,6 +56,7 @@ def InitInterfaces(logger, plc, data, root="", files_only=False, program="NodeMa
 
         elif network['method'] == "dhcp":
             inter['BOOTPROTO'] = "dhcp"
+            inter['PERSISTENT_DHCLIENT'] = "yes"
             if network['hostname']:
                 inter['DHCP_HOSTNAME'] = network['hostname']
             else: