public String getNetmask() {
        return this.netmask;
    }
<p>
The netmask used to divide the IP address into subnets.
</p>

@return The netmask used to divide the IP address into subnets.
aws-java-sdk-snowdevicemanagement/src/main/java/com/amazonaws/services/snowdevicemanagement/model/PhysicalNetworkInterface.java