iputil: finding IP addresses fails on kfreebsd

[davidsarah]

From ​http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700239:

tahoe start fails on kfreebsd:

NevowSite starting on 3456
Starting factory <nevow.appserver.NevowSite instance at 0x1a62fc8>
My pid: 29925
DatagramProtocol starting on 55322
Starting protocol <twisted.internet.protocol.DatagramProtocol instance at 0x1a73248>
Unhandled Error
#011Traceback (most recent call last):
#011  File "/usr/lib/python2.7/threading.py", line 525, in __bootstrap
#011    self.__bootstrap_inner()
#011  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
#011    self.run()
#011  File "/usr/lib/python2.7/threading.py", line 505, in run
#011    self.__target(*self.__args, **self.__kwargs)
<exception caught here> ---
#011  File "/usr/lib/python2.7/dist-packages/twisted/python/threadpool.py", line 207, in _worker
#011    result = context.call(ctx, function, *args, **kwargs)
#011  File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
#011    return self.currentContext().callWithContext(ctx, func, *args, **kw)
#011  File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
#011    return func(*args,**kw)
#011  File "/usr/lib/python2.7/dist-packages/allmydata/util/iputil.py", line 214, in _synchronously_find_addresses_via_config
#011    raise UnsupportedPlatformError(sys.platform)
#011allmydata.util.iputil.UnsupportedPlatformError: gnukfreebsd8
Node._startService failed, aborting
[Failure instance: Traceback: <class 'allmydata.util.iputil.UnsupportedPlatformError'>: gnukfreebsd8
/usr/lib/python2.7/threading.py:525:__bootstrap
/usr/lib/python2.7/threading.py:552:__bootstrap_inner
/usr/lib/python2.7/threading.py:505:run
<exception caught here> ---
/usr/lib/python2.7/dist-packages/twisted/python/threadpool.py:207:_worker
/usr/lib/python2.7/dist-packages/twisted/python/context.py:118:callWithContext
/usr/lib/python2.7/dist-packages/twisted/python/context.py:81:callWithContext
/usr/lib/python2.7/dist-packages/allmydata/util/iputil.py:214:_synchronously_find_addresses_via_config
]
calling os.abort()
calling os.abort()

The following patch fixes the issue:

--- tahoe-lafs-1.9.2.orig/src/allmydata/util/iputil.py
+++ tahoe-lafs-1.9.2/src/allmydata/util/iputil.py
@@ -161,6 +161,7 @@
     "netbsd4": "bsd",
     "netbsd5": "bsd",
     "netbsd6": "bsd",
+    "gnukfreebsd8": "bsd",
     "sunos5": "sunos",
     "cygwin": "cygwin",
     }