olemus
mobiilseadme ajutine IP-aadress väljaspool oma koduvõrku
= a temporary IP address for a mobile device used in Internet routing

ülevaateid
https://en.wikipedia.org/wiki/Care-of_address
http://www.tcpipguide.com/free/t_MobileIPAddressingHomeandCareOfAddresses.htm
https://tools.ietf.org/html/rfc5648