I do not expect, that any carriet took this as an emergency - defect is quite harmless (DOS in the worst case, + no exploits known, + no any interest for anyone to do it, + VoIP gateways involved only...). Even if someone is doing maintanance, it can be noticed by VoIP network users only. Moreover, correct me if it was not defect in Cisco express call center (call center @ IOS) - I can not image carriers using this (it was designed for small businesses). Why to get simple, relatively harmless (require ugrade in next scheduled time, usually 1 - 3 weeks) defect as a terrible threat to everyone? Even BGP problem was much more dangerous (and no single case known since this, so it was not emergency as well).. ----- Original Message ----- From: "Darrell Kristof (CE CEN)" <Darrell.Kristof@wholefoods.com> To: <nanog@merit.edu> Sent: Saturday, January 22, 2005 7:52 PM Subject: Emergency Internet Backbone Provider Maintenance Tonight All: Has anyone heard about some carriers doing emergency maintenance tonight on Internet routers due to a code vulnerability? I'm trying to find out what vendor it involves and the details behind it. I understand it's still under NDA, but I'm sure someone out there knows more. Thanks, - Darrell ====================================================================== Darrell Kristof, CISSP, CCNP, TICSA Network Manager/Team Leader Whole Foods Market, Corporate Offices