commit cc94e5f25303bc0ffdc2e327b56564f59f48804f
author Nick Kralevich <nnk@google.com> Sat Apr 01 10:00:19 2017 -0700
committer Nick Kralevich <nnk@google.com> Sat Apr 01 10:00:19 2017 -0700
tree 72f72d02237a327ce44f79a0fae748dfc1438e1d
parent 86aef026336129f099741f47eeac6ceba33b9917

clatd.c: remove unsetenv("ANDROID_DNS_MODE")

As of bionic commit I835a7b42d6afbc9c67866594c7951cfd9b355d81,
ANDROID_DNS_MODE is deleted from the environment when a security
transition occurs. As netd and clatd run in different SELinux security
domains, this variable will be automatically deleted. It's unnecessary
(but harmless) to delete it ourselves. Delete unnecessary code.

Test: Android compiles and runs with no obvious problems.
Change-Id: Id46c1a6989a3441a11b4be3d8a28aa1b926c1c6d

clatd.c

diff --git a/clatd.c b/clatd.c
index d57ea59..0b69238 100644
--- a/clatd.c
+++ b/clatd.c
@@ -503,10 +503,6 @@
     exit(1);
   }
 
-  // When run from netd, the environment variable ANDROID_DNS_MODE is set to
-  // "local", but that only works for the netd process itself.
-  unsetenv("ANDROID_DNS_MODE");
-
   configure_interface(uplink_interface, plat_prefix, &tunnel, net_id);
 
   update_clat_ipv6_address(&tunnel, uplink_interface);