In the past, before the netmgr, the `-U <n>` option to `named` configured number of listening dispatches for UDP per-interface. Since 9.16, it only affects the number of outgoing UDP dispatches. Properly document that in the `named` man page.
In the past, before the netmgr, the `-U <n>` option to `named` configured number of listening dispatches for UDP per-interface. Since 9.16, it only affects the number of outgoing UDP dispatches. Properly document that in the `named` man page.