hg: jdk10/sandbox/jdk: 8182672: Java 8u121 on Linux intermittently returns null for MAC address

[chris.hegarty at oracle.com]

Changeset: 890d3db7a25d
Author:    coffeys
Date:      2017-06-23 17:43 +0100
URL:       http://hg.openjdk.java.net/jdk10/sandbox/jdk/rev/890d3db7a25d

8182672: Java 8u121 on Linux intermittently returns null for MAC address
Reviewed-by: chegar, clanger, msheppar, vtewari

! src/java.base/unix/native/libnet/NetworkInterface.c
+ test/java/net/NetworkInterface/GetMacAddress.java