diff -Nru docker.io-1.12.6/debian/changelog docker.io-1.12.6/debian/changelog
--- docker.io-1.12.6/debian/changelog	2017-02-01 13:42:20.000000000 +0000
+++ docker.io-1.12.6/debian/changelog	2017-03-10 17:40:22.000000000 +0000
@@ -1,3 +1,13 @@
+docker.io (1.12.6-0ubuntu3) zesty; urgency=medium
+
+  * debian/tests/docker-in-lxd: Fix a latent version comparison bug that was
+    causing migration failures due to the script thinking it was dealing
+    with an old LXD (< 2.2) when it was really dealing with a recent LXD
+    (>= 2.10). The fix is to use `lxc info` to check if the network extension
+    is supported, rather than trying to compare version strings.
+
+ -- Tyler Hicks <tyhicks@canonical.com>  Fri, 10 Mar 2017 17:40:22 +0000
+
 docker.io (1.12.6-0ubuntu2) zesty; urgency=medium
 
   * Remove isolation-machine restriction from adt smoke-test
diff -Nru docker.io-1.12.6/debian/tests/docker-in-lxd docker.io-1.12.6/debian/tests/docker-in-lxd
--- docker.io-1.12.6/debian/tests/docker-in-lxd	2017-01-12 22:50:50.000000000 +0000
+++ docker.io-1.12.6/debian/tests/docker-in-lxd	2017-03-10 17:40:17.000000000 +0000
@@ -32,11 +32,16 @@
   echo ${SUBNET}
 }
 
+# Detect LXD API extensions
+lxd_extension() {
+  lxc info | grep -q "^\- ${1}$"
+}
+
 # Attempt to auto-configure ipv4, but only when really running under
 # autopkgtest.
 if [ -n "${AUTOPKGTEST_TMP:-}" ]; then
     lxd init --auto
-    if [ $(lxc version) '>' '2.2' ]; then
+    if lxd_extension "network"; then
         lxc network create adt-br0
         lxc network attach-profile adt-br0 default eth0
     else