$ gcloud alpha compute instances network-interfaces update \
    example-instance --zone us-central1-a --aliases r1:172.16.0.1/32

POSITIONAL ARGUMENTS

INSTANCE_NAME

Name of the instance to operate on.

FLAGS

--aliases=ALIASES

The IP alias ranges to allocate for this interface. If there are multiple IP alias ranges, they are separated by semicolons.
For example:

--aliases="10.128.1.0/24;r1:/32"

--network-interface=NETWORK_INTERFACE; default="nic0"

The name of the network interface to update.

--zone=ZONE

Zone of the instance to operate on. If not specified, you may be prompted to select a zone. gcloud will attempt to identify the zone by searching for resources in your project. If the zone cannot be determined, you will then be prompted with all Google Cloud Platform zones.
To avoid prompting when this flag is omitted, you can set the compute/zone property:

$ gcloud config set compute/zone ZONE

A list of zones can be fetched by running:

$ gcloud compute zones list

To unset the property, run:

$ gcloud config unset compute/zone

Alternatively, the zone can be stored in the environment variable CLOUDSDK_COMPUTE_ZONE.

GCLOUD WIDE FLAGS

NOTES

$ gcloud compute instances network-interfaces update $ gcloud beta compute instances network-interfaces update