--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/net.rst	Wed Apr 08 12:36:40 2009 +0300
@@ -0,0 +1,39 @@
+-*- outline -*-
+
+* How disable IPv6?
+
+** Debian kernel 2.6/Ubuntu ("official" method)/Fedora Core.
+
+Comment in /etc/modprobe.d/aliases "alias net-pf-10 ipv6" and add alias
+"net-pf-10 off", "alias ipv6 off":
+
+  $ sudo emacs /etc/modprobe.d/aliases
+...
+  $ cat /etc/modprobe.d/aliases
+...
+# alias net-pf-10 ipv6
+alias net-pf-10 off
+alias ipv6 off
+...
+
+Reboot or
+
+  $ sudo update-modules
+
+You can safely wipe out any IPv6 reference in "/etc/hosts" and
+"/etc/network/interfaces".
+
+** RHEL4/Centos4.
+
+As for Debian, but "/etc/modprobe.d/aliases" has name "/etc/modprobe.conf".
+
+** KDE.
+
+  $ cat /etc/environment
+...
+KDE_NO_IPV6=true
+...
+
+** Firefox.
+
+See about:config page, set "network.dns.disableIPv6" to "true".