This manual is very good. Following it step by step.
http://blog.sina.com.cn/s/blog_4e793e580101lku1.html
Then, we will encounter:
错误 zebra -d 会出现privs_init: could not lookup user quagga
Follow the following manual
http://blog.sina.com.cn/s/blog_4e793e580101lku1.html
Zebra and ospf6d are seperate process, need to be run seperately.
zebra -d
ospf6d -d
原文：https://www.cnblogs.com/yanhc/p/10040928.html