network_device_info.py traceback when running and a device is not configured for IPv4

---------------------------[ Devices found by udev ]----------------------------
Category: NETWORK
Interface: enp1s0f0
Product: I350 Gigabit Network Connection
Vendor: Intel Corporation
Driver: igb
Driver Version: 5.4.0-k
Path: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
Id: [8086:1521]
Subsystem Id: [1137:00d5]
Mac: 70:e4:22:83:64:50
Carrier Status: Connected
Ipv4: 10.193.36.103
Ipv6: fe80::72e4:22ff:fe83:6450/64
Speed: 1000

Traceback (most recent call last):
  File "/tmp/nest-7umvifvs.0a6fd5df593a8d7f8f0309fb5ecefc78386b499efc2ca17cb9dc44b4fc6c5396/network_device_info.py", line 365, in <module>
    for device in udev.devices():
  File "/tmp/nest-7umvifvs.0a6fd5df593a8d7f8f0309fb5ecefc78386b499efc2ca17cb9dc44b4fc6c5396/network_device_info.py", line 311, in devices
    nd.interface = getattr(device, 'interface', None)
  File "/tmp/nest-7umvifvs.0a6fd5df593a8d7f8f0309fb5ecefc78386b499efc2ca17cb9dc44b4fc6c5396/network_device_info.py", line 141, in interface
    self._interface_populate()
  File "/tmp/nest-7umvifvs.0a6fd5df593a8d7f8f0309fb5ecefc78386b499efc2ca17cb9dc44b4fc6c5396/network_device_info.py", line 215, in _interface_populate
    self._ipv4 = Utils.get_ipv4_address(self.interface)
  File "/tmp/nest-7umvifvs.0a6fd5df593a8d7f8f0309fb5ecefc78386b499efc2ca17cb9dc44b4fc6c5396/network_device_info.py", line 55, in get_ipv4_address
    struct.pack('256s', interface[:15].encode())
OSError: [Errno 99] Cannot assign requested address

This happens because the next interface in the list does not have an IPv4 address, and this creates a traceback in Utils.get_ipv4_address() in the script.