315 
Step Command Remarks 
7.  (Optional.) Enable dropping 
IPv6 packets that use 
IPv4-compatible IPv6 
addresses. 
tunnel discard 
ipv4-compatible-packet
By default, IPv6 packets that use 
IPv4-compatible IPv6 packets are not 
dropped.
 
 
Configuration example 
Network requirements 
As shown in Figure 130, configure an IPv6 over IPv6 tunnel between Router A and Router B so the 
two IPv6 networks can reach each other without disclosing their IPv6 addresses. 
Figure 130 Network diagram 
 
 
Configuration procedure 
Make sure Router A and Router B can reach each other through IPv6. 
•  Configure Router A: 
# Specify an IPv6 address for GigabitEthernet 2/0/1. 
<RouterA> system-view 
[RouterA] interface gigabitethernet 2/0/1 
[RouterA-GigabitEthernet2/0/1] ipv6 address 2002:1::1 64 
[RouterA-GigabitEthernet2/0/1] quit 
# Specify an IPv6 address for Serial 2/1/0, which is the physical interface of the tunnel. 
[RouterA] interface serial 2/1/0 
[RouterA-Serial2/1/0] ipv6 address 2001::11:1 64 
[RouterA-Serial2/1/0] quit 
# Create the IPv6 tunnel interface Tunnel 1. 
[RouterA] interface tunnel 1 mode ipv6 
# Specify an IPv6 address for the tunnel interface. 
[RouterA-Tunnel1] ipv6 address 3001::1:1 64 
# Specify the IP address of Serial 2/1/0 as the source address for the tunnel interface. 
[RouterA-Tunnel1] source 2001::11:1  
# Specify the IP address of Serial 2/1/1 on Router B as the destination address for the tunnel 
interface. 
[RouterA-Tunnel1] destination 2002::22:1 
[RouterA-Tunnel1] quit 
# Configure a static route destined for the IPv6 network group 2 through the tunnel interface. 
[RouterA] ipv6 route-static 2002:3:: 64 tunnel 1 
•  Configure Router B: