release 2.8.4

check ipv6 before enable it

release new version

new version release

release 2.8.0

fix bug: XX-net#1510, remove ip connect interval but not tested.

release new version

release new version for 2.7.1

Merge pull request XX-net#1445 from yeahwu/patch-1

Update README.md

很好的贡献，哈哈

change log