Fixes the following security issues:
- CVE-2020-13401: Disable IPv6 Router Advertisements to prevent address
spoofing
An attacker in a container, with the CAP_NET_RAW capability, can craft
IPv6 router advertisements, and consequently spoof external IPv6 hosts,
obtain sensitive information, or cause a denial of service.
In addition, 19.03.9..11 fixes a number of issues. For details, see:
https://docs.docker.com/engine/release-notes/
Signed-off-by: Christian Stewart <christian@paral.in>
[Peter: mention security impact, extend commit message]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
b73b3835f4