IndexToIpException in ipdevpoll Prefix plugin

[Morten Brekkevold]

A customer keeps getting these tracebacks from a failed the ipdevpoll inventory job under NAV 3.11.3 and NAV 3.11.4:

 [ERROR jobs.jobhandler] [inventory 129.242.35.50] Plugin nav.ipdevpoll.plugins.prefix.Prefix(u'10.0.35.50') reported an unhandled failure
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 345, in errback
    self._startRunCallbacks(fail)
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 424, in _startRunCallbacks
    self._runCallbacks()
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 441, in _runCallbacks
    self.result = callback(self.result, *args, **kw)
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 949, in gotResult
    _inlineCallbacks(r, g, deferred)
--- <exception caught here> ---
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 891, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.6/dist-packages/twisted/python/failure.py", line 338, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/lib/pymodules/python2.6/nav/ipdevpoll/plugins/prefix.py", line 88, in handle
    new_addresses = yield df
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 891, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/lib/python2.6/dist-packages/twisted/python/failure.py", line 338, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/lib/pymodules/python2.6/nav/mibs/ip_mib.py", line 262, in get_interface_addresses
    addrs_from_new_table = yield self._get_interface_addresses()
  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 739, in _deferGenerator
    result = g.next()
  File "/usr/lib/pymodules/python2.6/nav/mibs/ip_mib.py", line 237, in _get_interface_addresses
    ip = self.inetaddress_to_ip(row_index)
  File "/usr/lib/pymodules/python2.6/nav/mibs/ip_mib.py", line 72, in inetaddress_to_ip
    "IPv6 address length is not 16: %r" % (oid,))
nav.mibs.ip_mib.IndexToIpException: IPv6 address length is not 16: OID('.2.1.4.10.0.35.33')

The device in question is an APC UPS unit. The problem may possibly be related to bug 777821.

[Morten Brekkevold (mbrekkevold)]

basically fixed this by ignoring IP addresses from devices that exhibit this problem.

fix here: http://nav.uninett.no/hg/stable/rev/0254d5c07e97