Properly match existing security group
@ -146,7 +146,7 @@ def main():
groups[curGroup.id] = curGroup
groups[curGroup.name] = curGroup
if curGroup.name == name and curGroup.vpc_id == vpc_id:
if curGroup.name == name and (vpc_id is None or curGroup.vpc_id == vpc_id):
group = curGroup
# Ensure requested group is absent