fallback net config: do not consider devices starting with 'veth'

Just skip devices that are named veth*.
The fix here is to ignore lxd created devices, but any other veth
device that is created at this point in boot is probably not the
right interface to dhcp on.

LP: #1569064

1 files changed, 2 insertions, 0 deletions

diff --git a/cloudinit/net/__init__.py b/cloudinit/net/__init__.py
index 31110292..a765b75a 100644
--- a/cloudinit/net/__init__.py
+++ b/cloudinit/net/__init__.py
@@ -646,6 +646,8 @@ def generate_fallback_config():
     connected = []
     possibly_connected = []
     for interface in potential_interfaces:
+        if interface.startswith("veth"):
+            continue
         if os.path.exists(sys_dev_path(interface, "bridge")):
             # skip any bridges
             continue