The stack type for this network interface to identify whether the
IPv6 feature is enabled or not. If not specified, IPV4_ONLY will be
used. This field can be both set at instance creation and update
network interface operations.
Values:
UNDEFINED_STACK_TYPE (0):
A value indicating that the enum field is not
set.
IPV4_IPV6 (22197249):
The network interface can have both IPv4 and
IPv6 addresses.
IPV4_ONLY (22373798):
The network interface will be assigned IPv4
address.
UNSPECIFIED_STACK_TYPE (298084569):
No description available.
