with open('ospf.txt') as f:
    for line in f:
        line = line.split()
#        print (line)
        o, prefix, admetric, via, nexthop, lastupdate, interface = line
        template = '{:20} {:15}'
        print(template.format('Prefix',prefix))
        print(template.format('AD/Metric',admetric.strip('[]')))
        print(template.format('Next-Hop',nexthop.strip(',')))
        print(template.format('Last update ',lastupdate.strip(',')))
        print(template.format('Outbound Interface',interface))
        print('\n')