[outages] AT&T <-> Level3 Packet Loss in SF Bay Area

We've been observing a small about of intermittent packet loss to/from AT&T and Level3 here in the San Francisco Bay Area this morning. In examining the situation, it seems like a evenly-spaced dropping of packets to certain IPs. This appears to end users like some IPs on destination networks are reachable, while some adjacent ones are not. I suspect this is due to a failed LAG leg or ECMP leg on Level3's side. We were able to route around the problem for now. Cheers, jof