[outages] Level 3 intermittent packet loss in Dallas

We've opened a ticket with Level 3 (9896580) regarding intermittent packet loss affecting certain source/destination IP pairs, with certain pairs receiving 100% packet loss, and others passing traffic normally. For example, we were unable to ping 4.2.2.3, from a particular IP address, but could ping 4.2.2.2, and 4.2.2.4. We've disabled our Level 3 BGP session while we trouble shoot. This problem was causing some very strange trouble reports from our customers, such as certain sites not working, or working intermittently. -- Dan White