On Thu, Jan 2, 2014 at 1:53 PM, Bonno Bloksma <b.blok...@tio.nl> wrote: >>> >>> # rmmod ipv6 >>> >>> libkmod: ERROR ../libkmod/libkmod-module.c:1802 >>> kmod_module_get_holders: could not open '/sys/module/ipv6/holders': No >>> such file or directory Error: Module ipv6 is in use >> >> So I am certain now that I don't have ipv6 enabled at all, and that message >> can be ignored. > > In previous Debian versions ipv6 was done via a module that one could unload > or disable to prevent ipv6 being activated. > As of Squeeze ipv6 is built in at the kernel level and cannot be disabled > that way. > > So unless you are still running Lenny or build your own kernel there is no > ipv6 module. > Just do "ip addr" or "ifconfig" and you will probably see ip6 lines, ip6 is > default on now. If your uplink does not do ipv6 then there is no ipv6 traffic > going over the line and no delay in using ipv4.
When ipv6 is compiled as a module, you can disable it with modprobe or sysctl. When ipv6 is compiled in-kernel, you can disable it in two ways. You can disable the ipv6 stack by adding "ipv6.disable=1" to the kernel cmdline. You can disable the assignment of ipv6 addresses to nics by adding "ipv6.disable_ipv6=1" to the kernel cmdline. The latter's the equivalent of creating "/etc/sysctl.d/disable_ipv6.conf" where # cat /etc/sysctl.d/disable_ipv6.conf net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.default.disable_ipv6=1 net.ipv6.conf.eth<X>.disable_ipv6=1 (or you can "echo 1 > /proc/sys/net/ipv6/conf/.../disable_ipv6" at boot) -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOdo=SwhpoHVecXgeXXa+jRLkfcKCKxg4hLu8G9FiLtQ5pj=d...@mail.gmail.com
