It is reported that when a bridge device is set up with "None" for the boot protocol on a network with working IPv6 stateless configuration the host will receieve a valid SLAAC IPv6 address. This could result in a system being reachable via IPv6 when it is not intended to be.
*** Bug 1265991 has been marked as a duplicate of this bug. ***
Workaround: Firewall IPv6 on hosts to prevent network availability.
Statement: This issue affects the versions of vdsm as shipped in Red Hat Enterprise Virtualization 3.x. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.