EthLink is EthDNS for the
.eth domain. Because
.eth is not a registered DNS top-level domain it is normally inaccessible from
DNS, but by appending
.link to the domain the relevant information cam be obtained. For example, a DNS A record request for
mydomain.eth.link would look up the A records in ENS for
DNS information held in ENS can be accessed in exactly the same way as traditional DNS.
ENS has a
contenthash field which contains a pointer to content somewhere on the internet, most commonly in IPFS. If EthDNS is asked to serve a domain with a
contenthash it will carry out the following operations:
$ host -t A wealdtech.eth.link wealdtech.eth.link has address 18.104.22.168 $ host -t TXT wealdtech.eth.link wealdtech.eth.link descriptive text "dnslink=/ipfs/QmP3ouCnU8NNLsW6261pAx2pNLV2E4dQoisB1sgda12Act" wealdtech.eth.link descriptive text "contenthash=0xe301017012200a8b34b25425eb99c7a5c08df2db3cf3f1eb69a793db4b3d8c3f0c6bb59976ad"
The practical upshot of this is that if a user enters the URL
https://wealdtech.eth.link/ in to their web browser it will return IPFS content based on the information within ENS without any changes required to their system (browser plugins, alternate DNS servers, etc.).
Content hashes can be managed at https://manager.ens.domains/
There are also various libraries and CLI tools that can manage content hashes.
There are various libraries and CLI tools that can manage DNS information on ENS.
EthLink only applies to
.eth domains, however other domains registered in ENS can be accessed directly when enabled.
Enabling ENS-based resolution is a simple case of using the EthLink Use the following hosts as your NS servers:
ns1.ethdns.xyz ns2.ethdns.xyz ns3.ethdns.xyz