/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/ is in golang-github-docker-libnetwork-dev 0.8.0-dev.2+git20170202.599.45b4086-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_endpoint.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_joinleave.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_network.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_setup.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_setup_test.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_state.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_store.go
/usr/share/gocode/src/github.com/docker/libnetwork/drivers/macvlan/macvlan_test.go