Bind both IPv4 and IPv6 or exit with an error by default.
Bind both IPv4 and IPv6 or exit with an error by default.

Thanks to @tushar2708 for the PR. I applied a slightly different fix.
Thanks to @cespare for reporting.

Close #3024
Close #3020

4396/redis,4396/redis,xuguruogu/redis,pedigree/redis,pedigree/redis,4396/redis,xuguruogu/redis,pedigree/redis,4396/redis,xuguruogu/redis,pedigree/redis,xuguruogu/redis