Aliyun: ubuntu 16.04.
springBoot: 1.5.9
declare: I do not have a domain name ~

my attempt:
1 I have applied for an account on it

ipv6

/etc/network/interfaces

ipv6

netstat -tnlp

tcp6 udp6~~

dns

ping6 ipv6.baidu.com
ping

App needs the support of ipv6. I don"t know how to do it. I don"t know if this server can support ipv6.. Because when I went to this website
http://ipv6-test.com/validate.
for testing, it was invalid because he checked the dns first. But I don"t have a domain name!