Re:Growl in Retirement
by bonzini on Sunday November 29, 2020 @06:55AM
(#25244624)
No it doesn't go out, but the APN itself does go out on the network and can be used to apply different billing to tethered vs mobile browser data usage. https://news.ycombinator.com/item?id=25244052 for more info.
I thought that's an Android internal thing to decide which of several APNs to use.
Also the first 2 references that Google returns say dun is obsolete and not in use with today's devices. I believe that belongs to the ATD *99# era
(Havent't worked in the field for 10+ years, could be wrong.)