CLI Reference  IPv6 Configuration Commands 
 
Source IPv4 address of the tunnel used as the source IP address of 
the packets to be transmitted through the tunnel. 
If the tunnel mode ipv6 or tunnel mode gre ipv6 is configured, the 
source address  of the tunnel shall be  the IPv6 address. Using the 
local  address  of  the  link  as  the  source  address  is  not  supported 
currently. 
interface-type 
interface-number 
Interface referenced by the tunnel, which will be used as the source 
IPv4 address of the packets to be transmitted through the tunnel. 
No tunnel source address is configured by default. 
Interface configuration mode. 
The source IP address of a tunnel can be a specified IPv4 address or an IPv4 address of an interface. 
When you configure an auto tunnel (for example, 6to4 and isatap), it is recommended to specify the 
source address. 
A device shall not be configured multiple tunnels with the same encapsulation type, source address 
and destination address. 
If there are multiple auto tunnels, their source addresses shall be different. 
The following example configures an IPv6 manual tunnel. 
Ruijie(config)# interface tunnel 1 
Ruijie(config-if)# tunnel mode ipv6ip 
Ruijie(config-if)# tunnel source vlan 1 
Ruijie(config-if)# tunnel destination 192.168.5.1 
Configure the mode of a tunnel. 
Configure the destination address of a tunnel. 
Configure the TTL of the tunnel. 
Use this command to specify the TTL value of the IPv4 header in the encapsulated IPv6 messages. 
The no form of this command restores it to the default.