Updated handling of disable_ipv6 file
Updated handling of disable_ipv6 file

Signed-off-by: Jim Carroll <5de990c9a821203ec6b25bad8d561b10538a2fa8@docker.com>

mahak/libnetwork,docker/libnetwork,docker/libnetwork,medallia/libnetwork,medallia/libnetwork,medallia/libnetwork,mahak/libnetwork,mahak/libnetwork,docker/libnetwork