After the package net-dns/bind was installed on Gentoo, the follow messages are given:

 * The default zone files are now installed as *.zone,
 * be careful merging config files if you have modified
 * /var/bind/pri/127 or /var/bind/pri/localhost
 *
 * You can edit /etc/conf.d/named to customize named settings
 *
 * The BIND ebuild now includes chroot support.
 * If you like to run bind in chroot AND this is a new install OR
 * your bind doesn't already run in chroot, simply run:
 * `emerge --config '=net-dns/bind-9.4.3_p1'`
 * Before running the above command you might want to change the chroot
 * dir in /etc/conf.d/named. Otherwise /chroot/dns will be used.
 *
 * Recently verisign added a wildcard A record to the .COM and .NET TLD
 * zones making all .com and .net domains appear to be registered
 * This causes many problems such as breaking important anti-spam checks
 * which verify source domains exist. ISC released a patch for BIND which
 * adds 'delegation-only' zones to allow admins to return the .com and .net
 * domain resolution to their normal function.
 *
 * There is no need to create a com or net data file. Just the
 * entries to the named.conf file is enough.
 *
 *      zone com IN { type delegation-only; };
 *      zone net IN { type delegation-only; };
 * BIND >=9.2.5 makes the priority argument to MX records mandatory
 * when it was previously optional.  If the priority is missing, BIND
 * won't load the zone file at all.