> On Dec 19, 2017, at 07:39 , Livingood, Jason <[email protected]> > wrote: > > On 12/18/17, 2:36 PM, "NANOG on behalf of Harald Koch" > <[email protected] on behalf of [email protected]> wrote: >> They could use IPv6. I mean, if the mobile phone companies can figure it >> out, surely an ISP can... > > Except for cases when it is impossible or impractical to update software on a > great number of legacy devices… > > JL > > Yeah, in those cases, they should use IPv6 + NAT64 or similar mechanism.
Owen

