LINUx设置ip导致内核挂死,Linux 3.2.x 内核中禁用/降级临时IPV6地址

重装了Ubuntu 12.04，内核升级后，支持了临时IPV6地址，但是，默认被设置成了：优先走临时地址，再走public地址。

具体参见：

http://www.ipsidixit.net/2012/08/09/ipv6-temporary-addresses-and-privacy-extensions/

$ ls /proc/sys/net/ipv6/conf/eth0

accept_dad disable_ipv6 regen_max_retry

accept_ra force_mld_version router_probe_interval

accept_ra_defrtr force_tllao router_solicitation_delay

accept_ra_pinfo forwarding router_solicitation_interval

accept_ra_rt_info_max_plen hop_limit router_solicitations

accept_ra_rtr_pref max_addresses temp_prefered_lft

accept_redirects max_desync_factor temp_valid_lft

accept_source_route mc_forwarding use_tempaddr

autoconf mtu

dad_transmits proxy_ndp

关键就是这个use_tempaddr啦，定义如下：

use_tempaddr System dependent (seems to be 2 on Ubuntu these days…) We might expect that this is a simple on/off value to enable use of temporary addresses. Yet when we cat it on this system it has the value ’2′.

<=0 Disable Privacy Extensions (i.e. do not use changing temporary addresses at all)

==1 Use the Privacy Extensions, but prefer public (i.e. non-temporary) adresses over temporary ones.

>1 (e.g. 2 as here) Use the Privacy Extensions and prefer them.

该怎么做不用我说了吧，root直接写值即可。

su

echo 1 > /proc/sys/net/ipv6/conf/eth0/use_tempaddr

备注：此内核设置即时生效，无需重启networking服务。