It is 20 months since AT&T announced that it planned to deploy a white box router on every cell site (about 60,000 over several years) and to open source the network operating system they will run, DANOS (disaggregated network operating system). Things have gone rather quiet about this ambitious plan to drive openness and low cost into AT&T’s network edge, while also stimulating a broad open ecosystem for white box routers in general (the telco has also contributed its router specs to the Open Compute Project). Now the operator has announced that it will donate DANOS – which it developed itself, based on its acquisition of Vyatta from Brocade – to the Linux Foundation on November 15, a year later…