Gentoo Archives: gentoo-user

From: Michael Orlitzky <mjo@g.o>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Choice of TLD for internal network
Date: Tue, 19 Dec 2017 17:58:42
Message-Id: e155ca4c-0d62-b428-6764-c141360d7ff6@gentoo.org
In Reply to: Re: [gentoo-user] Choice of TLD for internal network by R0b0t1
1 On 12/19/2017 12:22 PM, R0b0t1 wrote:
2 >
3 > There are; .local and .localhost are reserved TLDs.
4
5
6 .local is reserved for Apple's multicast DNS stuff, which requires names
7 to be resolved via a nonstandard method:
8
9 Any DNS query for a name ending with ".local." MUST be sent to the
10 mDNS IPv4 link-local multicast address 224.0.0.251 (or its IPv6
11 equivalent FF02::FB).
12
13 Therefore anything that supports RFC 6762 will break if you name your
14 domain ".local". Likewise, .localhost is reserved by RFC 6761 which says
15
16 Users may assume that IPv4 and IPv6 address queries for localhost
17 names will always resolve to the respective IP loopback address.
18
19 ...
20
21 Caching DNS servers SHOULD recognize localhost names as special
22 and SHOULD NOT attempt to look up NS records for them, or
23 otherwise query authoritative DNS servers in an attempt to
24 resolve localhost names.
25
26 In other words, anything that supports RFC 6761 will break if you name
27 your domain ".localhost".

Replies

Subject Author
Re: [gentoo-user] Choice of TLD for internal network R0b0t1 <r030t1@×××××.com>