On Feb 14, 2017, at 15:00, Templin, Fred L
<Fred(_dot_)L(_dot_)Templin(_at_)boeing(_dot_)com> wrote:
Unless there is operational assurance of some size X>1280, however, tunnels
have to use fragmentation to guarantee that - at a minimum - packets up to
1280 will get through.
Given the growing prevalence of IPv6 using 6LoWPAN on IEEE 802.15.4, which is
always MTU=1280 everywhere, c.f. RFC 4944, I think we can forget about ever
getting that operational assurance in practice.
--james woodyatt <jhw(_at_)google(_dot_)com <mailto:jhw(_at_)google(_dot_)com>>