Full diff https://github.com/docker/libnetwork/compare/5c1218c956c99f3365711974e300087810c31379...c15b372ef22125880d378167dde44f4b134e1a77 Fixes a panic on concurrent read/write to a map. Signed-off-by: Brian Goff <cpuguy83@gmail.com> (cherry picked from commit 248aed5766ba330ab8cb2b10b03b6ce57dc64283) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>