-rA, --use-default:
When specified, this flag tells the program to use a predefined list of default DNS resolvers for lookups. This is useful for ensuring consistent DNS resolution across various environments, especially if no custom resolvers are provided.
-R, --resolvers-file:
This flag allows you to specify a file containing a list of custom DNS resolvers. Each line in the file should contain a single resolver IP address. If both -R and -r are provided, the resolver specified by -r is added to the list of resolvers from the file.
New Flags
-rA, --use-default: When specified, this flag tells the program to use a predefined list of default DNS resolvers for lookups. This is useful for ensuring consistent DNS resolution across various environments, especially if no custom resolvers are provided.
-R, --resolvers-file: This flag allows you to specify a file containing a list of custom DNS resolvers. Each line in the file should contain a single resolver IP address. If both -R and -r are provided, the resolver specified by -r is added to the list of resolvers from the file.