[mythtv] Q about networking after recent networking improvements in master

Bill Meek keemllib at gmail.com
Sun Apr 16 17:16:29 UTC 2017

On 04/16/2017 11:53 AM, Gary Buhrmaster wrote:
> On Sun, Apr 16, 2017 at 3:25 PM, Bill Meek <keemllib at gmail.com> wrote:
>> The ideal case seems to let the kernel develop/announce
>> the ULAs, assuming folks choose to mimic IPv4 Private
>> Network addresses.
> I think you may be confusing link local addresses
> (which the kernel does do for both IPv4 and IPv6),
> and locally administered addresses, which is
> typically provided by your gateway/router (often
> RFC1918 for IPv4, and can be ULA for IPv6)
> since it needs to be coordinated across all your
> residential networks.

Looks like ULAs to me:

$ ifconfig
enp4s0    Link encap:Ethernet  HWaddr 1c:6f:65:4a:85:15
           inet addr:  Bcast:  Mask:
           inet6 addr: fd14:4bf7:d5bf:0:1e6f:65ff:fe4a:8515/64 Scope:Global
           inet6 addr: fd14:4bf7:d5bf:0:4c4c:afde:fb87:7981/64 Scope:Global
           inet6 addr: fdf9:a66:2cd8:1::221/64 Scope:Global
           inet6 addr: fd14:4bf7:d5bf:0:b52e:f578:ce6b:8ceb/64 Scope:Global
           inet6 addr: fe80::1e6f:65ff:fe4a:8515/64 Scope:Link
           inet6 addr: fd14:4bf7:d5bf:0:d3bd:3a12:6018:90cb/64 Scope:Global

fd14... = magic to me, fdf9... = the ULA I made up and configured. Yesterday,
the fd14:4bf7:d5bf:0/64 prefix was fdec:somethingElseIdon'tRemember. Perhaps
they're some kind of stale temporary address. Just don't know. But if it's
not a reliable kernel feature, it's of no value to Peter's question.

[my ISP only provides GUAs to their business customers and based on my last
  conversation with them, they have no plans to start]


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