Posted: Wed Jun 20, 2018 1:48 Post subject: Chromecast issues after upgrading because of Krack vulnerabi
I was running a old 2014 build on my Linksys e2000 router until last week. I upgraded the ddwrt version to 36154 and the previous build but the chromecast quit working. I can ping it but can't connect to it on windows pc/chrome browser, or my iphone. I blocked google dns using this command and it let me stream from windows a couple times and quit again. Any ideas?
Hmmm 2014 to current is quite a build jump, I would consider an nvram reset, just to be on the safe side, considering a jump that big...
Foremost I would try simply power cycling the Chromecast, simple, but in the land of "always on" people may not think of this, simply unplug the us cable and reconnect...
Have you tried resetting the Chromecast itself? Have the Chromecast go back to defaults and try to configure again, sounds like a WiFi setting may be buggered...do other devices in your lan have issues?
Chromecast works well with all recent Kong builds for my Broadcom routers. I would go with a reset as a start _________________ Netgear R7000 on Build 55109
Asus AC-AC68U rev. C1 (AP) on Build 55109
Asus AC-68U rev. A1 on Build 54604
Asus AC-68U rev. A1 on Build 53339
No, but might be worthwhile to try a slightly older BS build, in 35900-36000 range. _________________ Netgear R7000 on Build 55109
Asus AC-AC68U rev. C1 (AP) on Build 55109
Asus AC-68U rev. A1 on Build 54604
Asus AC-68U rev. A1 on Build 53339
Posted: Wed Jun 20, 2018 22:42 Post subject: Still working
I have factory reset the chromecast and the router and it didn't help. I have been trying different firmwares and this is what I found.
DD-WRT v3.0-r30016 mega ->Works perfect all platforms
DD-WRT v3.0-r33772 mega ->Works from Windows/Chrome but not iphone
DD-WRT v3.0-r33986 mega (12/04/17) ->Works from Windows/Chrome but not iphone
Posted: Thu Jun 21, 2018 1:30 Post subject: DD-WRT v3.0-r35531 mega (03/26/18)
So I am running DD-WRT v3.0-r35531 mega (03/26/1 now.
I have it working now with that version. But chromecast didnt work. I had to iptables block the 8.8.8.8 address and set ddwrt to ping the ipaddress of the chromecast. It you stop using it after 10-15 min it disconnects but not if you ping it. It is now working from windows and my iphone but not my Samsung phone or ipad. I usually stream from my iphone so it is ok for now. But if I go to a old version the chromecast just works.
Joined: 08 May 2018 Posts: 14244 Location: Texas, USA
Posted: Thu Jun 21, 2018 7:37 Post subject: Re: DD-WRT v3.0-r35531 mega (03/26/18)
betolley wrote:
So I am running DD-WRT v3.0-r35531 mega (03/26/1 now.
I have it working now with that version. But chromecast didnt work. I had to iptables block the 8.8.8.8 address and set ddwrt to ping the ipaddress of the chromecast. It you stop using it after 10-15 min it disconnects but not if you ping it. It is now working from windows and my iphone but not my Samsung phone or ipad. I usually stream from my iphone so it is ok for now. But if I go to a old version the chromecast just works.
Sounds like you might need to drop back to r35531 K2.6 and try that, or perhaps configure DD-WRT to block both 8.8.8.8 and 8.8.4.4 in the firewall per the wiki...
Joined: 08 May 2018 Posts: 14244 Location: Texas, USA
Posted: Fri Jun 22, 2018 2:31 Post subject:
JAMESMTL wrote:
don't drop or reject dns queries, redirect or dnat them to your dns server
I believe Chromecast defaults to querying Google dns servers and that causes issues with connectivity (?) The wiki doesn't explain the necessity for dropping / rejecting querying them to get Chromecast to work.
