Re: [Ddclient-support] wrong ip address picked up from firewall/router

[Kurt B. <ku...@no...>]

Is No-IP still supported by DDClient?  I see no mention of us on the below link even though we use the identical protocol as Dyn.

http://sourceforge.net/apps/trac/ddclient/wiki/Protocols

I need to check the code and see if our external IP detection is still in there, which would solve your issue.


On Jul 20, 2013, at 12:18 AM, Mike Scott <v....@sc...> wrote:

> 
> Hi; I've recently started using ddclient (3.8.1). I'm fetching the WAN 
> ip address from my router, a netgear dg834g.
> 
> It's been running for a couple of weeks or so, but I noticed a hiccup 
> today: the system log contained:
> 
> Jul 19 14:42:41 data ddclient[71264]: SUCCESS:  updating 
> XXXXXXXXXX.dnsd.info: good: IP address set to 192.168.1.254
> Jul 19 14:42:43 data ddclient[71264]: SUCCESS:  updating 
> XXXXXXXXXX.no-ip.info: good: IP address set to 192.168.1.254
> 
> showing the domain name being pointed at the router's private LAN 
> address. This I'm guessing is down to a timing glitch - it seems the 
> lease on that address expired, and a new address was allocated by the 
> dhcp server. A minute later, ddclient picks up a proper WAN ip address.
> 
> Both LAN and WAN addresses are normally on the netgear's status page; 
> presumably while the dhcp negotiation is in progress, the layout changes 
> just a bit and fools ddclient.
> 
> 
> I've put a nasty hack in for the moment into the end of subroutine 
> get_ip that checks for my local LAN addresses and returns undef if so 
> set. At least it stops needless updates to clearly wrong values. It 
> might be better if ddclient recognised this situation and checked more 
> often until a valid address was found, as well as maybe parsing the 
> status page a bit more accurately.
> 
> 
> 
> # Mike's patch 29 Jul 2013.
> # LAN address confused with WAN if fw is in middle of update.
> # Should add full list, but hey.......
>         if( define($ip,'') =~ /^192\.168\./ ) {
>                 warning("fw returned local ip address -- ignored %s.", 
> $ip);
>                 $ip = undef;
>         }
> #########
> 
>     debug("get_ip: using %s, %s reports %s", $use, $arg, define($ip, 
> "<undefined>"));
>     return $ip;
> }
> 
> 
> Unfortunately, there's no easy way to test this
> 
> 
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