[Cerowrt-devel] Got DHCPv6 working in CeroWrt 3.7.x over HE.net tunnel

[Richard E. Brown]

Thanks to Dave Täht and Robert Bradley for the pointers to making CeroWrt 3.7.x hand out IPv6 addresses to LAN devices. (This has been tested with 3.7.4-2.)  The process is indeed a few simple steps:

1) remove dnsmasq & dnsmasq-dhcpv6, then install again (see Dave Täht's note below)
2) Add config to /etc/dnsmasq.conf to hand out DHCPv6 addresses (as suggested by Robert Bradley)
3) Tweak the firewall to put henet 6in4 tunnel into WAN zone
3) Bring up henet and restart network, firewall, dnsmasq

There's a fully-functional script at: http://www.bufferbloat.net/attachments/download/165/tunnelbroker.sh that does this. (You'll have to substitute your own credentials there…) Save the script as a file in /tmp and execute it - it does all the configuration for you.

Thanks again!

Rich Brown
Hanover, NH USA

On Jan 26, 2013, at 7:15 PM, Robert Bradley <robert.bradley1 at gmail.com> wrote:

> I’m pretty certain that once dnsmasq has been removed and dnsmasq-dhcpv6 has been reinstalled, my previous instructions for modifying /etc/dnsmasq.conf work fine.  The methods in http://wiki.openwrt.org/doc/uci/network6 ought to work too, but I haven’t tested those.
>  
> From: Dave Taht [mailto:dave.taht at gmail.com] 
> Sent: 27 January 2013 00:09
> To: Richard Brown
> Cc: Robert Bradley; Maciej Soltysiak; Chris Lawrence; Phil Pennock; Török Edwin
> Subject: Re: Need help getting DHCPv6 working in CeroWrt 3.7.x
>  
>  
> 
> On Sat, Jan 26, 2013 at 3:40 PM, Richard Brown <Rich.Brown at intermapper.com> wrote:
> Dave, Robert, Maciej, Chris, Phil, Edwin,
> 
> [Sent off-list]
> 
> Notes on the list make it sound as if some of you have IPv6 is working in the CeroWrt 3.7.x series of builds. Tantalizing hints abound, but I have not succeeded in getting recent CeroWrt to assign IPv6 addresses to my LAN devices with my HE.net 6in4 tunnel.
> 
> My request: If you have IPv6 automatic address assignment working in a recent 3.7.x build, please send the steps you perform, starting from a clean firmware install. I'll summarize the info and update the Bufferbloat wiki to include those steps. Many thanks.
> 
> Rich Brown
> Hanover, NH USA
> 
> PS Dave: I see that 3.7.4-2 has been posted. Does that affect any of the IPv6 stuff?
> 
> 
> I'm hoping that fixes the last ipv6 kernel trap, and I've been testing it all day, and it does so far.
> 
> For some reason it keeps installing both dnsmasq for normal and ipv6 (I have the first configured as a module), and it takes a
> 
> opkg update 
> opkg remove dnsmasq
> opkg remove dnsmasq-dhcpv6
> opkg install dnsmasq-dhcpv6
> 
> to get the right version. And then that version is failing to distribute dhcp...
> 
> And even then, no luck on getting addresses distributed, but not a lot of trying. I'm just trying to kill the traps.
> 
> But TRAPS?!? dead as a doornail so far, so with my limited goals, I'm happy. 
> 
> Once those are honestly dead I can move up the stack to this problem. Next week. It is entirely feasible the that trap killing stuff is messing something else.
> 
> 
> 
> 
> 
> -- 
> Dave Täht
> 
> Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html

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