Rather than trying to solve these issues individually the lack of low level connectivity can be addressed at a higher
level. Currently many internet connected devices that have the issue of limited power reserves rely on the device
initiating all communication rather than listening for any incoming communications. This relies on having an always
available route to an endpoint which they communicate with, and requires all communication with the device
go through that endpoint. While this has worked for current devices, this solution reimposes many of the limitations
that had been removed by using direct internet connectivity rather than proprietary systems. Through previous
research, Delay Tolerant Networking (DTN) had been shown to have potential but required additional research to
make it suitable for IP based networks2. This paper covers the implementation of IP extension headers as a means
of implementing DTN and discusses the initial testing of the system in Cooja simulated nodes then on Zolertia Z1
hardware.