+3. **Routing table algorithms** `radix4_lockless` and `radix6_lockless` could leak kernel memory during routing table changes. Systems with frequently changing routing tables (e.g., BGP routers) would experience gradually increasing kernel memory usage over time, potentially leading to system instability. +
+**Workaround**: Switch to the non-lockless routing algorithm using `sysctl net.route.algo.inet4.algo=radix4` or `sysctl net.route.algo.inet6.algo=radix6`. +
+**State**: Open — https://bugs.freebsd.org/297339 +