Example: Showing all network device related information

Basic example on how to print all interface and address information of a network device.

Sample output

Interface "lo" (1):
 • MTU: ................ 65536
 • FLAGS: .............. ['LOWER_UP', 'RUNNING', 'UP', 'LOOPBACK']
 • ADDRESS: ............ 00:00:00:00:00:00
 • PROMISCUITY: ........ 1
 • TYPE: ............... LOOPBACK
 • PROTINFO: ........... DISABLED
 • BROADCAST: .......... 00:00:00:00:00:00
 • INDEX: .............. 1
 • OPERSTATE: .......... UNKNOWN
 • AF_SPEC: ............ 0
 • EXT_MASK: ........... []
 • FAMILY: ............. 0
 • WEIGHT: ............. 0
 • NUM_TX_QUEUES: ...... 1
 • QDISC: .............. noqueue
 • PHYS_PORT_ID: ....... 0
 • IFNAME: ............. lo
 • NUM_RX_QUEUES: ...... 1
 • PHYS_PORT_NAME: ..... 
Address "127.0.0.1":
 • FLAGS: .............. ['PERMANENT']
 • CACHEINFO: .......... {'preferred': 4294967295, 'cstamp': 602, 'tstamp': 1407340, 'valid': 4294967295}
 • LABEL: .............. lo
 • SCOPE: .............. HOST
 • FAMILY: ............. 2
 • ADDRESS: ............ 127.0.0.1
 • INDEX: .............. 1
 • LOCAL: .............. 127.0.0.1
 • PREFIXLEN: .......... 8
Address "::1":
 • FAMILY: ............. 10
 • SCOPE: .............. HOST
 • CACHEINFO: .......... {'preferred': 4294967295, 'cstamp': 602, 'tstamp': 602, 'valid': 4294967295}
 • PREFIXLEN: .......... 128
 • FLAGS: .............. ['PERMANENT']
 • INDEX: .............. 1
 • ADDRESS: ............ ::1


Interface "eth0" (2):
 • MTU: ................ 1500
 • FLAGS: .............. ['MULTICAST', 'UP', 'BROADCAST']
 • ADDRESS: ............ 54:42:49:5C:BC:23
 • PROMISCUITY: ........ 1
 • TYPE: ............... ETHER
 • PROTINFO: ........... 1000
 • BROADCAST: .......... FF:FF:FF:FF:FF:FF
 • INDEX: .............. 2
 • OPERSTATE: .......... UNKNOWN
 • AF_SPEC: ............ 0
 • EXT_MASK: ........... []
 • FAMILY: ............. 0
 • WEIGHT: ............. 2
 • NUM_TX_QUEUES: ...... 1
 • QDISC: .............. pfifo_fast
 • PHYS_PORT_ID: ....... 1
 • IFNAME: ............. eth0
 • NUM_RX_QUEUES: ...... 0
 • PHYS_PORT_NAME: ..... 
Statistics:
 …

Source code

#!/usr/bin/python3
import netlink

with netlink.Network() as network:
	for device, attributes in network.get_interfaces_with_addresses().items():
		# Print header
		print()
		print("Interface \"{0}\" ({1}):".format(device.name, device.index))
		
		# Move address list out of the general interface attribute list
		addresses = attributes["ADDRESSES"]
		del attributes["ADDRESSES"]
		
		# Print interface attributes
		for name, value in attributes.items():
			space = '.' * (16 - len(str(name)))
			print(" • {0}: ...{2} {1}".format(name, value, space))
		
		# Print interface addresses attributes
		for address, properties in addresses.items():
			# Print address header
			print("Address \"{0}\":".format(address))
			
			# Print address attributes
			for name, value in properties.items():
				space = '.' * (16 - len(str(name)))
				print(" • {0}: ...{2} {1}".format(name, value, space))
		
		# Print statistical information (only if the list is non-empty)
		statistics = device.get_statistics()
		if statistics:
			# Print statistics header
			print("Statistics:")
			
			# Print statistical attributes
			for name, value in statistics.items():
				space = '.' * (32 - len(str(name)))
				print(" • {0}: ...{2} {1}".format(name, value, space))
		
		# Print footer
		print()