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Update dns forwarding documentation (#3574)

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Add details about setting up macOS to point to consul for services without the headache of dnsmasq, bind, etc.
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csawyerYumaed 2017-10-12 14:25:57 -07:00 committed by James Phillips
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website/source/docs/guides/forwarding.html.md
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@ -179,6 +179,20 @@ but not need the overhead of a separate service on the Consul host.
[root@localhost ~]# iptables -t nat -A OUTPUT -d localhost -p tcp -m tcp --dport 53 -j REDIRECT --to-ports 8600
```
### macOS Setup
On macOS systems, you can use the macOS system resolver to point all .consul requests to consul.
Just add a resolver entry in /etc/resolver/ to point at consul.
documentation for this feature is available via: ```man5 resolver```.
To setup create a new file ```/etc/resolver/consul``` (you will need sudo/root access) and put in the file:
```
nameserver 127.0.0.1
port 8600
```
This is telling the macOS resolver daemon for all .consul TLD requests, ask 127.0.0.1 on port 8600.
### Testing
First, perform a DNS query against Consul directly to be sure that the record exists: