[Outages-discussion] Anyone aware of problems around Chicago (I believe)?

[Larry Sheldon]

Scott Weeks wrote:

> It's an ACL.. Traceroute is blocked, but tcptraceroute goes right
> through:

Is it just me, or are there in fact two rules in general use?

1.  Failures in traceroute and ping mean the Intartubes are broken.
2.  For safety and security, ICMP, ping packets and traceroutes must be 
blocked.