Inet4Address#isLinkLocalAddress can also return true if the address is
in the 169.254.0.0/16 range.
The code should also only consider directly-connected routes for
guessing, as default routes would match any address.
This is not used in platform code. This code path is only used when the
mDNS stack is used as a library.
Bug: 415483522
Test: atest
Flag: EXEMPT dead code in the platform
Change-Id: I53d8ad7f96368d4609b1baa804cd75aa65628c0c
5453629266