Ruijie# show ipv6 interface vlan 1 
Interface vlan 1 is Up, ifindex: 2001 
address(es): 
Mac Address: 00:00:00:00:00:01 
INET6: fe80::200:ff:fe00:1 , subnet is fe80::/64 
Joined group address(es): 
ff01:1::1 
ff02:1::1 
ff02:1::2 
ff02:1::1:ff00:1 
INET6: 2001::1 , subnet is 2001::/64 [TENTATIVE] 
Joined group address(es): 
ff01:1::1 
ff02:1::1 
ff02:1::2 
ff02:1::1:ff00:1 
MTU is 1500 bytes 
ICMP error messages limited to one every 10 milliseconds 
ICMP redirects are enabled 
ND DAD is enabled, number of DAD attempts: 1 
ND reachable time is 30000 milliseconds 
ND advertised reachable time is 0 milliseconds 
ND retransmit interval is 1000 milliseconds 
ND advertised retransmit interval is 0 milliseconds 
ND router advertisements are sent every 200 seconds<240--160> 
ND device advertisements live for 1800 seconds 
The following line is included in the above information: 2001::1, subnet is 2001::/64 [TENTATIVE]. 
The flag bit in the [ ] following the INET6 address is explained as follows: