# Percona 5.6 Alpha - Cannot start mysql

**URL:** <https://forums.percona.com/t/percona-5-6-alpha-cannot-start-mysql/1991>\
**Category:** Other MySQL® Questions\
**Created:** [February 13, 2013, 12:47pm UTC](https://forums.percona.com/t/percona-5-6-alpha-cannot-start-mysql/1991 "2013-02-13T12:47:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shockwavecs](https://avatars.discourse-cdn.com/v4/letter/s/aca169/32.png) [@shockwavecs](https://forums.percona.com/u/shockwavecs)\
**Post date:** [February 13, 2013, 12:47pm UTC](https://forums.percona.com/t/percona-5-6-alpha-cannot-start-mysql/1991/1 "2013-02-13T12:47:00Z")

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I cannot start the mysql daemon on my box after installing Percona 5.6. Alpha 61.

130213 13:11:20 [Warning] /usr/sbin/mysqld: unknown variable 'loose-validate\_password\_dictionary\_file=/usr/share/dictionary.txt’130213 13:11:20 [Note] Server hostname (bind-address): ‘\*’; port: 3306130213 13:11:20 [Note] - ‘::’ resolves to ‘::’;130213 13:11:20 [ERROR] Failed to create a socket for IPv6 ‘::’: errno: 97.130213 13:11:20 [ERROR] Can’t create IP socket: Address family not supported by protocol130213 13:11:20 [ERROR] Aborting

The errors indicate something to do with networking, etc. I have IPv6 turned off and removed from /etc/hosts file. (I removed it as a test and still the same thing happens)

No firewall is on  
SELINUX disabled  
Percona 5.5 works perfectly fine on this box

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**Author:** ![shockwavecs](https://avatars.discourse-cdn.com/v4/letter/s/aca169/32.png) [@shockwavecs](https://forums.percona.com/u/shockwavecs)\
**Post date:** [February 13, 2013, 2:32pm UTC](https://forums.percona.com/t/percona-5-6-alpha-cannot-start-mysql/1991/2 "2013-02-13T14:32:25Z")

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Fixed.

I had to edit the /etc/sysctl.conf /etc/modprobe.conf and /etc/sysconfig/network to reflect use of IPv6

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**Author:** ![gmouse](https://avatars.discourse-cdn.com/v4/letter/g/b9e5f3/32.png) [@gmouse](https://forums.percona.com/u/gmouse)\
**Post date:** [February 13, 2013, 3:28pm UTC](https://forums.percona.com/t/percona-5-6-alpha-cannot-start-mysql/1991/3 "2013-02-13T15:28:59Z")

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[http://mysqlblog.fivefarmers.com/2012/08/13/how-will-ipv6-ch](http://mysqlblog.fivefarmers.com/2012/08/13/how-will-ipv6-ch) anges-in-5-6-6-affect-you/

You could have used bind-address with an ipv4 address.