DNS proxy configuration example

Network requirements

As shown in Figure 48, configure Device A as the DNS proxy to forward DNS packets between the DNS client (Device B) and the DNS server at 4000::1.

Figure 48: Network diagram

Configuration procedure

Before performing the following configuration, make sure that:

  1. Configure the DNS server:

    This configuration might vary by DNS server. When a PC running Windows Server 2008 R2 acts as the DNS server, see "Dynamic domain name resolution configuration example" for configuration information.

  2. Configure the DNS proxy:

    # Specify the DNS server 4000::1.

    <DeviceA> system-view
    [DeviceA] ipv6 dns server 4000::1
    

    # Enable DNS proxy.

    [DeviceA] dns proxy enable
    
  3. Configure the DNS client:

    # Specify the DNS server 2000::2.

    <DeviceB> system-view 
    [DeviceB] ipv6 dns server 2000::2
    

Verifying the configuration

# Verify that DNS proxy on Device A functions.

[DeviceB] ping host.com
Ping6(56 data bytes) 2000::1 --> 3000::1, press CTRL_C to break
56 bytes from 3000::1, icmp_seq=0 hlim=128 time=1.000 ms
56 bytes from 3000::1, icmp_seq=1 hlim=128 time=0.000 ms
56 bytes from 3000::1, icmp_seq=2 hlim=128 time=1.000 ms
56 bytes from 3000::1, icmp_seq=3 hlim=128 time=1.000 ms
56 bytes from 3000::1, icmp_seq=4 hlim=128 time=0.000 ms

--- Ping6 statistics for host.com ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.000/0.600/1.000/0.490 ms