IANA has reallocated the Babel port; it is now 6696. The attached patch makes
wireshark grok both the old and new ports.
svn path=/trunk/; revision=38783
This should not trigger with any Babel packets generated by the current
version of babeld, but could potentially do so with a future version
that performs more aggressive compression for IPv4 addresses.
svn path=/trunk/; revision=36920