Re: comcast v4 in pnw

[Randy Bush <randy () psg com>]

kinda summary:  comcast and cogent/sprint very helpful.  likely
cause a misconfig in cogent norcal when trying to route around
a power outage in seattle.

fwiw, HE and IIJ IPv6 transit (tyvm) in seattle allowed us to keep
working through the outage.

randy