首先保证自己已经在ipv6环境里，在Linux下，通过以下命令ping ipv6地址，注意，不是ping，是ping6 了
# ping6 ipv6.google.com
PING ipv6.google.com(lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e)) 56 data bytes
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=1 ttl=119 time=0.373 ms
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=2 ttl=119 time=0.404 ms
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=3 ttl=119 time=0.403 ms
那么ping不能用了么？当然不是，以下是ping命令，带一个参数-6 就可以了。
# ping -6 ipv6.google.com
PING ipv6.google.com(lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e)) 56 data bytes
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=1 ttl=119 time=0.440 ms
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=2 ttl=119 time=0.409 ms
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=3 ttl=119 time=0.785 ms
64 bytes from lax28s10-in-x0e.1e100.net (2607:f8b0:4007:80d::200e): icmp_seq=4 ttl=119 time=0.444 ms