No change after running this and trying both: system network restart ifdown eth0; ifup eth0 Still having an IPv6 addr. The box has been up for 140 days. Would like to keep it running... This box is really Redsleeve 6, which is the port of Centos 6 to arm. The kernel I am using is the F19 kernel. All of this MIGHT be contributing to things not working as they would on a 'normal' Centos box. I am awaiting the start of the Centos7-arm work ;) On 03/09/2015 01:15 AM, Chris Stone wrote: > Sorry - that should be > > > sysctl -w net.ipv6.conf.all.accept_ra=0 > > to disable that, not 1. > > > Chris > > > On Sun, Mar 8, 2015 at 11:14 PM, Chris Stone <axisml at gmail.com> wrote: > >> Try: >> >> sysctl -w net.ipv6.conf.all.accept_ra=1 >> >> to persist between boots, be sure to add this to your /etc/sysctl.conf >> file. >> >> This should prevent the box from listening to any RA announcements. >> >> >> Chris >> >> On Sun, Mar 8, 2015 at 10:55 PM, Ryan Wagoner <rswagoner at gmail.com> wrote: >> >>> On Fri, Mar 6, 2015 at 11:52 AM, Robert Moskowitz <rgm at htt-consult.com> >>> wrote: >>> >>>> >>>> On 03/06/2015 11:00 AM, Robert Moskowitz wrote: >>>> >>>>> >>>>> On 03/06/2015 10:55 AM, Barry Brimer wrote: >>>>> >>>>>> >>>>>> IPV6INIT="no" >>>>>>> But I am still getting a global IPv6 (and of course local scope). >>>>>>> >>>>>>> What else do I need to do to disable the listening for RA >>> announcements >>>>>>> and setting an IPv6 global address? I do not want to reboot the box. >>>>>>> >>>>>> There are other modules, most notably bonding that rely on the ipv6 >>>>>> module being loaded. What I do is place "options ipv6 disable=1" in >>>>>> "/etc/modprobe.d/ipv6.conf". That does require a reboot, which I know >>> you >>>>>> are looking to avoid, so you may want to try other methods to remove >>> your >>>>>> address in the running configuration. >>>>>> >>>>> 'All' I need is for the system not to have a global IPv6 address. Then >>> it >>>>> will not try to connect to other global IPv6 systems which will reject >>> the >>>>> connection, as the IPv6 rDNS cannot be set, given it is a dynamic IPv6 >>>>> assigned address from the ISP. >>>>> >>>> I tried: >>>> >>>> # cat /etc/sysconfig/network >>>> NETWORKING=yes >>>> HOSTNAME=z9m9z.htt-consult.com >>>> NETWORKING_IPV6=no >>>> IPV6INIT=no >>>> >>>> >>>> and 'service network restart' but still showing IPv6 addressing. >>> >>> >>> I would try adding the below line to /etc/sysconfig/network. >>> >>> IPV6_AUTOCONF=no >>> >>> Ryan >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> http://lists.centos.org/mailman/listinfo/centos >>> >> >> >> -- >> Chris Stone >> AxisInternet, Inc. >> www.axint.net >> > >