···122122```bash
123123sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
124124```
125125+126126+127127+---
128128+129129+## fuzzing
130130+131131+got bit by https://github.com/cloudflare/cardinality-estimator/pull/12, so now we have a fuzz target.
132132+133133+install cargo-fuzz and then
134134+135135+```bash
136136+RUSTFLAGS="-Z sanitizer=address" cargo +nightly fuzz run cardinality_estimator
137137+```
138138+139139+to fuzz the counts value things