When running the BOD scanning in a VPC, the concurrency I was using before (550) seems to sometimes overwhelm the NAT gateway. By reducing the concurrency to 100 we still get good results and the scanning still completes in a reasonable amount of time (about 6 hours).
When running the BOD scanning in a VPC, the concurrency I was using before (550) seems to sometimes overwhelm the NAT gateway. By reducing the concurrency to 100 we still get good results and the scanning still completes in a reasonable amount of time (about 6 hours).