SCIENTIFIC-LINUX-USERS Archives

August 2015

SCIENTIFIC-LINUX-USERS@LISTSERV.FNAL.GOV
Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
IPv6 address popping up
From:
Andreas Mock <[log in to unmask]>
Reply To:
Andreas Mock <[log in to unmask]>
Date:
Wed, 5 Aug 2015 09:00:12 +0000
Content-Type:
text/plain
Parts/Attachments:
text/plain (30 lines) 
Hi all,

I hope anybody out there can give me the right hint for a problem
I have on a server with SL 6.6 64 bit.

I want to have IPv6 totally disabled. Therefore I did the following
found on the net:

/etc/sysctl.conf  :  net.ipv6.conf.all.disable_ipv6 = 1
/etc/sysconfig/network  : NETWORKING_IPV6=no
/etc/sysconfig/network-scripts/ifcfg-eth0 : IPV6INIT=no (and other ifcfg)
iptables6 disabled 
in /etc/modprobe.d/ipv6.conf with:
alias net-pf-10 off
alias ipv6 off

After reboot all seems ok. No IPv6 address shown with 'ip addr show'.

BUT: After some time (hours, days, I don't know), when I look at
the ip addresses I can suddenly see that there is a IPv6 address.
A 'cat /proc/sys/net/ipv6/conf/all/disable_ipv6' shows 1 in that
case. Kernel modules are loaded.

Can anyone give me a hint or explanation why IPv6 is suddenly popping up?
Is there any code/process out there pulling the IPv6 modules into the
kernel?

Best regards
Andreas

ATOM RSS1 RSS2