Comment 2 for bug 855971

Thiis is expected behavior. In HA mode each host needs to be assigned an ip to gateway for its vms. If you want to manually reserve an ip for a host, it is insufficient to simply set it to reserved. You will need to manually associate it with the host by setting the host field in the fixed_ips table.

Something like:

mysql -h $MYSQL_HOST -u $MYSQL_USER -p $MYSQL_PASS $MYSQL_DB -e "UPDATE fixed_ips SET host=`hostname` WHERE address='$MY_IP'"

should be sufficient.