Check n.IPAM before use it in LoadIPAMConfig function

Signed-off-by: Tang Le <tangle3@wanda.cn>

diff --git a/plugins/ipam/host-local/backend/allocator/config.go b/plugins/ipam/host-local/backend/allocator/config.go
index d261d0f..8c00448 100644 (file)
--- a/plugins/ipam/host-local/backend/allocator/config.go
+++ b/plugins/ipam/host-local/backend/allocator/config.go
@@ -54,6 +54,10 @@ func LoadIPAMConfig(bytes []byte, args string) (*IPAMConfig, string, error) {
                return nil, "", err
        }
 
+       if n.IPAM == nil {
+               return nil, "", fmt.Errorf("IPAM config missing 'ipam' key")
+       }
+
        if args != "" {
                n.IPAM.Args = &IPAMArgs{}
                err := types.LoadArgs(args, n.IPAM.Args)
@@ -62,10 +66,6 @@ func LoadIPAMConfig(bytes []byte, args string) (*IPAMConfig, string, error) {
                }
        }
 
-       if n.IPAM == nil {
-               return nil, "", fmt.Errorf("IPAM config missing 'ipam' key")
-       }
-
        // Copy net name into IPAM so not to drag Net struct around
        n.IPAM.Name = n.Name