# Use External DNS

> **Note**
> DNS request should be forwarded by dae for domain based traffic split. This guide will show you how to configure dae with external DNS.

If you use a external DNS like AdguardHome, you could refer to the following guide.

## External DNS on localhost

If you set up a external DNS on localhost, you may want to let the DNS queries to dns.google proxied. For example, if you have following configuration in AdguardHome:

```
Listen on: the same machine with dae, port 53.

China mainland: udp://223.5.5.5:53
Others: https://dns.google/dns-query
```

You should configure dae as follows:

1. Complete `wan_interface` in "global" section to proxy requests of AdguardHome.

2. Insert following rule as the first line of "routing" section to avoid loops.

   ```python
   pname(AdGuardHome) && l4proto(udp) && dport(53) -> must_direct
   ```

   And make sure domain `dns.google` will be proxied in routing rules.

3. Add upstream and request to section "dns".

   ```
   dns {
     upstream {
       adguardhome: 'udp://127.0.0.1:53'
     }
     request {
       fallback: adguardhome
     }
   }
   ```

4. If you bind to LAN, make sure your DHCP server will distribute dae as the DNS server (DNS request should be forwarded by dae for domain based traffic split).

## External DNS on another machine in LAN

If you set up a external DNS on another machine in LAN, you may want to let the DNS queries to dns.google proxied. For example, if you have following configuration in AdguardHome:

```
Listen on: 192.168.30.3:53 (mac address: 8c:16:45:36:1c:5a)

China mainland: udp://223.5.5.5:53
Others: https://dns.google/dns-query
```

You should configure dae as follows:

1. Fill in `lan_interface` in "global" section to proxy requests of AdguardHome.

2. Insert following rule as the first line of "routing" section to avoid loops.

   ```python
   sip(192.168.30.3) && l4proto(udp) && dport(53) -> must_direct
   # Or use MAC address if in the same link:
   # mac(8c:16:45:36:1c:5a) && l4proto(udp) && dport(53) -> must_direct
   ```
   
   And make sure domain `dns.google` will be proxied in routing rules.
   
3. Add upstream and request to section "dns".

   ```
   dns {
     upstream {
       adguardhome: 'udp://192.168.30.3:53'
     }
     request {
       fallback: adguardhome
     }
   }
   ```

4. If you bind to LAN, make sure your DHCP server will distribute dae as the DNS server (DNS request should be forwarded by dae for domain based traffic split).