This is what I have found out that happened. It was not your hosts fault, it appears to have been a Level 3 and cisco issue.
Dear Customers:
We received today the following letter from Level 3
regarding the past 2 days.
Sent: Thursday, July 17, 2003 10:39 AM
Subject: Level(3)
__________________________________________________ ________________
As you may be aware, Level 3 performed significant maintenance to Cisco
routers in our Network over the past two evenings. Due to restrictions in
our contract with Cisco, we were not at liberty to share with you the nature
or details of the pending work. Additional information can now be shared.
Level 3 Communications was notified by Cisco on the evening of Tuesday, July
15, of a potential software risk running on Cisco routers. In coordination
with Cisco, Level 3 Engineers worked to secure the Level 3 Network through
network modifications and router maintenance that evening. The remainder of
our core Network infrastructure was completed in the maintenance window last
evening.
We recognize that the timeframe and notification provided in this case have
not been consistent with standard practice. The decision to move forward
with work was based on a collective assessment of the potential impacts to
your services if the risk was not mitigated.
We will continue to conduct maintenance activities over the coming days as
we address issues associated with this specific exposure, and mitigate any
potential remaining risk. We will provide specific maintenance notifications
to Customers on the associated services we would impact in those follow-on
maintenance activities.
For more information regarding the vulnerability please visit:
http://www.cisco.com/en/US/products/...801a34c2.shtml