from noc.lib.app import ExtApplication, view
from noc.ip.models import *
from noc.inv.models import *

def netinfo(network):
    prf=Prefix.objects.get(prefix=network)
    addrs = prf.nested_address_set
    ni = ""
    for a in addrs:
        subs = SubInterface.objects.filter(ipv4_addresses__contains=a.address+'/')
        for s in subs:
            if s.managed_object:
                mo = s.managed_object
                ni += "L3 device: "+mo.name+"\n"
                ni += "L3 interface: "+s.name+"\n"
                arps = mo.scripts.get_arp()
                for arp in arps:
                    if s.name == arp['interface']:
                        ni += "ARP entry: "+arp['ip']+" "+arp['mac']+"\n"
                needbreak = True
                break
        if needbreak: break
    return ni
>>> netinfo('212.233.127.48/29')
u'L3 device: msk-sbl-cr1\nL3 interface: Vl 412\nARP entry: 212.233.127.50 CC:5D:4E:4D:C8:11\n'