Re: [gentoo-user] Why do we add the local host name to the 127.0.0.1 / ::1 entry in the /etc/hosts file?
> On 2021-02-21, at 17:23, Grant Taylor > wrote: > > Hi, > > I'm reading Kerberos - The Definitive Guide[1] and it makes the following > comment: > >> And to make matters worse, some Unix systems map their own hostname to >> 127.0.0.1 (the loopback IP address). > > This makes me think that the local host name /shouldn't/ be included in the > 127.0.0.1 (or ::1) entry in the /etc/hosts file. > > However, according to the Gentoo AMD64 Handbook[2], we are supposed to add > the local host name to the 127.0.0.1 (and ::1) entry in the /etc/hosts file. > > Will someone please explain why the Gentoo AMD64 Handbook ~> Gentoo (at > large) says to add the local host name to the 127.0.0.1 (or ::1) entry in the > /etc/hosts file? What was the thought process behind that? The thought process is the same as the guide you are reading. https://www.oreilly.com/library/view/kerberos-the-definitive/0596004036/ch04s03.html It says in the last paragraph on this page that the /etc/hosts file should have the '127.0.0.1 localhost ' (last part is definitely optional) and then that the next entry should have the outer IP address mapped to the FQDN. -- Andrew
[gentoo-user] Why do we add the local host name to the 127.0.0.1 / ::1 entry in the /etc/hosts file?
Hi, I'm reading Kerberos - The Definitive Guide[1] and it makes the following comment: And to make matters worse, some Unix systems map their own hostname to 127.0.0.1 (the loopback IP address). This makes me think that the local host name /shouldn't/ be included in the 127.0.0.1 (or ::1) entry in the /etc/hosts file. However, according to the Gentoo AMD64 Handbook[2], we are supposed to add the local host name to the 127.0.0.1 (and ::1) entry in the /etc/hosts file. Will someone please explain why the Gentoo AMD64 Handbook ~> Gentoo (at large) says to add the local host name to the 127.0.0.1 (or ::1) entry in the /etc/hosts file? What was the thought process behind that? Incidentally, adding the local host name to the 127.0.0.1 (or ::1) entry in the /etc/hosts file causes "hostname -i" to return 127.0.0.1 instead of the IP address bound to the network interface. Thank you for any input you can provide. [1] Kerberos: The Definitive Guide (p. 109). O'Reilly Media. Kindle Edition. [2] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/System#The_hosts_file -- Grant. . . . unix || die
