Dear A.S. Joseph Charles,

one year ago (summer 2017) I sorted the RPL literature according to the different problems and created RPL Literature Guide. There you may find some sources of literature on the problems you mentioned.

My 6-part RPL Literature Guide can be found at the following addresses:

https://www.researchgate.net/publication/321965573_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_-_The_Introduction

https://www.researchgate.net/publication/322211316_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_-_Part_1_RPL_Framework

https://www.researchgate.net/publication/321038248_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_-_Part_2_RPL_Extensions

https://www.researchgate.net/publication/322367185_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_Part_3_RPL_Analysis_and_Evaluation

https://www.researchgate.net/publication/322603340_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_Part_4_RPL_Applications_-_Concepts_Analysis_and_Evaluation

https://www.researchgate.net/publication/323111013_A_Literature_Collection_on_Routing_in_the_Internet_of_Things_IoT_with_RPL_Part_5_RPL_Implementations-Analysis_and_Evaluation

Maybe the contents under these addresses can be helpful:

https://www.researchgate.net/publication/320244798_RPL_-_IPv6_Routing_Protocol_for_LLNs

https://www.researchgate.net/publication/326960645_RPL_Message_DIO

https://www.researchgate.net/publication/326960497_RPL_messages_and_their_structure

https://www.researchgate.net/publication/326960652_RPL_Routing_Metrics_and_Constraints

Best regards

Anatol Badach

Check this paper

Article A Novel Adaptive Routing Update Scheme for Low-Power Lossy N...

https://www2.eecs.berkeley.edu/Pubs/TechRpts/2016/EECS-2016-106.pdf

Suppressing DIO messages consequently leads to unoptimized routes which affects network performance. Moreover, this kind of attack requires very less device power which gives an extra benefit to a adversary for performing long term attacks. The attack is termed as DIO suppression. For more details you can refer to paper authored by Perazzo et al.

https://ieeexplore.ieee.org/document/8008736