G. Barzdins and A. Heidens. Method and device for reducing of data transmission volume via routined communication network by tunneling data packets of private network. 2014. I. Opmane, L. Truksans, G. Barzdins, A. Heidens, R. Balodis, and P. Merzlyakov. ZERO: an efficient Ethernet-over-IP tunneling protocol. Inter-cooperative Collective Intelligence: Techniques and Applications, Springer, volume 495, 2014.