diff --git a/_drafts/ipv6.md b/_drafts/ipv6.md
index 9743cf0..3975f38 100644
--- a/_drafts/ipv6.md
+++ b/_drafts/ipv6.md
@@ -18,8 +18,8 @@ The comments of that post are also totally lost.
 ## IPv4
 
 It's probably start with what is wrong with IPv4 and note that all modern
-operating systems (including Windows 7 and newer) are designed to work with
-IPv6 and disabling it may break some features.
+operating systems (including Windows Vista and newer) are designed to work
+with IPv6 and disabling it may break some features.
 
 There are no IPv4 addresses for everyone and that is why we have NATs in
 routers so we only have one IPv4 address facing the internet. That isn't
@@ -102,3 +102,80 @@ As I am talking so much about privacy extensions, I must probably tell
 that you can disable them if you want. I have no idea if that is possible
 with OS X so I don't say anything about it, I only know that it uses them
 by default.
+
+Windows: start by disabling the randomization and then
+
+```
+netsh interface ipv6 set privacy state=disabled store=active
+netsh interface ipv6 set privacy state=disabled store=persistent
+```
+
+Linux: check NetworkManager or whatever you use config files
+(or connection editor) or use the
+kernel option directly in `/etc/sysctl.conf` or preferably
+`/etc/sysctl.d/<whatever>.conf`: `net.ipv6.conf.default.use_tempaddr=0`.
+
+The numbers you can use here are:
+
+* 0 — IPv6 Privacy Extensions are disabled.
+* 1 — IPv6 Privacy Extensions are enabled, but **SLAAC-address is
+  preferred.**
+* 2 — IPv6 Privacy Extensions are enabled and preferred. This is usually
+  the default and what you should use.
+
+### Getting IPv6
+
+For native connectivity I only know about Finland (links in the list in
+Finnish)…
+
+* [IPv6 in Finnish consumer connections](http://ape3000.com/ipv6/)
+    * At the time of writing Elisa and DNA which are two of three biggest
+      carriers (Sonera is missing) have IPv6 in all mobile connections, DNA
+      has IPv6 also in broadband connections and Elisa is working on it
+      and Sonera has 6rd.
+* [Elisa's page on enabling IPv6](http://asiakastuki.elisa.fi/ohje/541)
+* [DNA's page on IPv6](https://www.dna.fi/ipv6)
+    * [DNA's instructions for enabling IPv6 on different devices](https://www.dna.fi/ipv6-laitteet)
+
+…but I can suggest searching the web for `yourISP IPv6` and contacting
+their customer support asking when they are going to enable IPv6.
+
+For tunneling there are multiple services, but I am only going to mention
+Teredo shortly, it's the protocol of last resolt for accessing IPv6 sites
+and Windows comes with it by default. The easiest way to enable it is
+probably saving the following as `something.reg` and running it:
+
+```
+Windows Registry Editor Version 5.00
+
+[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters]
+"AddrConfigControl"=dword:00000000
+
+[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\TCPIP\v6Transition]
+"Teredo_DefaultQualified"="Enabled"
+"Teredo_State"="Enterprise Client"
+"Teredo_ServerName"="teredo.trex.fi"
+```
+
+Short explanation:
+* Enable looking up IPv6 records even with Teredo
+* Enable Teredo…
+* …even if we are in domain
+* use teredo.trex.fi as Teredo server, you might want to use some server
+  that is more [near to you](https://en.wikipedia.org/wiki/Teredo_tunneling#Servers).
+
+Linux: install package `miredo` and edit the server in `/etc/miredo.conf`
+if needed.
+
+And then check [ipv6-test.com](http://ipv6-test.com) and it should detect
+your Teredo connectivity. Some browsers don't even attempt to use it, at
+least I think Google Chrome did so.
+
+## Further reading
+
+* [Wikipedia's page on IPv6](https://en.wikipedia.org/wiki/IPv6)
+* [Wikipedia's page on Teredo](https://en.wikipedia.org/wiki/Teredo_tunneling)
+* [Microsoft Technet: A 5 Second Boot Optimization If You’ve Disabled IPv6 on Windows Client and Server by setting DisabledComponents to 0xFFFFFFFF](http://blogs.technet.com/b/askpfeplat/archive/2014/09/15/a-5-second-boot-optimization-if-you-ve-disabled-ipv6-on-windows-client-and-server-by-setting-disabledcomponents-to-0xffffffff.aspx)
+    * TL;DR: depending on how you disabled IPv6 your boot might be 5
+      seconds lower and Microsoft discourages disabling it and they don't
+      test working without IPv6. Disabling IPv6 breaks e.g. HomeGroup.