IPv6 oriented Openwrt build for WNDR3700/WNDR3800 (Page 25 of 39)

This might not be your fault. Do you by chance have your OpenWrt router with the 6in4 tunnel behind another NAT-router which is then connected to your DSL / cable line?

If this is the case then it might be that this other router is not handling your tunnel correctly. Not all IPv4 routers handle 6in4 traffic correctly and there is really not much you can do about it.

Well if that is correct then this sounds like a bug in Windows 8.
Does it cause any disrupting behaviour? Does it still send a DHCPv6-RENEW at least every hour? (might be just that an incorrect value is shown but internally it might be correct)

But not sure what we can do about that. Setting the leasetime to 24h is not an option for IPv6 because these addresses might change more recently and thus would break client behaviour in general.

However even if it is that broken in Windows 8 addresses are still received via regular Router Advertisement which might save the IPv6-connectivity.

0s are fine, they just mean that the client has no preference for anything. In general everything the client sends to the server is just a hint what the client likes to receive back, but the server is free to ignore any or all of those hints.

As long as the client adheres to what the server tells it, everything is fine.

No, all communication normally originates from the client (including Renew).

There is one command that the server can send which is RECONFIGURE but that is not supported by Windows and is normally only used when changes happen to the addresses before their lifetime runs out.

Hi Cyrus,

That's what I thought, so probably win8 ipconfig /all is just reporting the wrong lease time info and actually renewing at or about the 1hr mark.

However, there are  couple of questions remaining
1) Anyway to prevent loosing host name from DHCPv6 lease when expired and then renewed?
     I suspect maybe hostname info is not send with renew?
    Could host name be stored with DUID info ?
2) Can we extend a grace period on server a bit longer than 1h so that we can avoid expired condition? E.g. let the lease in server be 1:15h while telling the client that lease time is 1h?

Then what would be causing the hostname to become '?'

A bit more info on the disappearing DHCPv6 hostname

The hostname disappears after openwrt is reset.
The once rebooted lease will renew but '?' will be shown as hostname.

'ipconfig /renew6' will not restore hostname

'ipconfig /release6' followed by 'ipconfig /renew6' will restore the hostname

Any suggestions?
Will hostname only be updated on initial request but not on renew?

WNDR3700v2 or WNDR3800

My WNDR3700v2 has bitten the bullet, and I need to replace it. Presently the 3800 is about $125 and the 3700 is about $90 at Amazon.

I simply need wifi (wpa2 psk), eventually WAN-accessible openvpn that relays my connection back to the WAN, and the various ipv6 WAN options which are well-provided by the 3700. I don't do NAS.

So is there any reason to go for the 3800? (e.g. more WIFI power; better reliability; etc.)

Thanks for thoughts and opinions.

I have all three: 3700, 3700v2 and 3800...
As far as I know the RAM size is the only difference between 3800 and 3700v2. Both have 16 MB flash.
(and 3800 has a red front bezel...) I have not noticed any practical difference between those two with Openwrt. I have no comments for the original Netgear firmware as I have not used it.

With 3700 you need to be very careful to check that you really get a 3700v2, instead of 3700v3 or 3700v4 that are incompatible...

- r37035: fstab partially fixed, reset functionality is missing

fstab - the block device automounting - has been partially fixed. Apparently the config format has changed and the mounting can currently be configured only for known devices by uuid. Discussion here:
https://lists.openwrt.org/pipermail/openwrt-devel/2013-June/020541.html
A working model /etc/config/fstab is included in the build, but it works only for one of my USB sticks. You have to replace the uuid with your device's uuid...

root@OpenWrt:~# cat /etc/config/fstab
config 'mount'
        option target  '/mnt'
        option uuid    '8c6c-0792'
        option enabled '1'

## Use 'block detect' to find out your disk's uuid.
## Then set the uuid option here correctly.

Reset functionality is apparently broken since r36989.
I have created a ticket: https://dev.openwrt.org/ticket/13769

This might be my last build until late July. (If the reset functionality is fixed, I might do one more build tomorrow.)

The built-in Netgear TFTP recovery will work regardless of the screwed-up functionality inside Openwrt. That is one of the best features in WNDR3700/3800...
http://wiki.openwrt.org/toh/netgear/wndr3700#recovery.flash.in.failsafe.mode

Only the Openwrt "soft reset" is broken, meaning that "firstboot" or "jffs2reset" commands will not reset the jffs2 overlay partition.

EDIT:
Thanks to http://wiki.openwrt.org/doc/techref/preinit_mount#jffs2reset I traced that the old pre-ubox version of the reset could be duplicated by just including the contents of the old reset hook's scripts in the reset script. Those have already been deleted, but can still be found from svn:
https://dev.openwrt.org/browser/trunk/p … ?rev=36429
https://dev.openwrt.org/browser/trunk/p … ?rev=36429
https://dev.openwrt.org/browser/trunk/p … ?rev=36429
In practice only the commands in 20_reset_clear_jffs should be needed as I know that my build has the overlay.

I am not going to do that now, as I expect the developers to return the reset functionality sooner or later.

THANK YOU, The_Decryptor and hnyman for your quick replies!

Turns out that the V2 is not easy to find online, and the 3800 is rather pricey. However, I did manage to find a V2 at a local Best Buy (also saw some V3s and V4s, and an original 3700 :-) .

So I'm good to go; thanks again!