tree 6755bd14a875d1b9bb7ece9472beff02d960a2d7
parent 8595924e6c37eb0b8f3b92c04632022bf5ef70ab
author Simon Lin <simonlin@google.com> 1568303499 +0800
committer Jonathan Hui <jonhui@google.com> 1568303499 -0700

[mle] always echo back AR TLV in Child ID/Update Response (#4162)

This commit ensures that a Child ID/Update Response message always
includes an Address Registration TLV when the Child ID/Update Request
message	includes an Address Registration TLV, even when there are no
IPv6 addresses to include.

This commit reverts a change in commit 1133983.