tree c6c04ae2efc36c9b3ca87d40cc59975eb3d9de99
parent 2f5df35a91a09fb0fbe80f2bce913316bd269e3a
author Lorenzo Colitti <lorenzo@google.com> 1511167955 +0900
committer Lorenzo Colitti <lorenzo@google.com> 1511168372 +0900

Use a UDP socket instead of a ping socket for ioctls.

The type of socket used for ioctls does not affect the success
of the calls themselves, so UDP is just as good as ping.
However, UDP makes this code more reusable, because on many
systems, ping sockets are restricted by default.

Test: all_tests.sh passes on android-4.9
Change-Id: I44a25af880659b364edbec72850d968b2ef17f11