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Firefox fails to resolve local/VPN DNS

I am using Firefox on Linux (Ubuntu 20.10) to work from home over OpenVPN. Recently the VPN configuration was changed to use split tunneling to improve our internet conne… (read more)

I am using Firefox on Linux (Ubuntu 20.10) to work from home over OpenVPN. Recently the VPN configuration was changed to use split tunneling to improve our internet connection. Since then I have had several DNS resolving issues in Firefox.

We use an on premise DNS server as an alternative to `localhost` domain names so we can access other developers' environments and so a few services can do the same. Our URL structure is like projectname.[optional personal identifier.]localhost.[type].nl. Without the [optional personal identifier], or when nothing is configured for it, the ip address is 127.0.0.1.

In Linux' OpenVPN configuration I have "Use this connection only for resource on its network" enabled for IPv4 and IPv6 is disabled (to benefit from split tunneling). With that enabled Firefox usually fails to resolve such development hostnames.

- As far as I know I do not have DoH enabled (and the about:networking log further down tells so too). - I do have `dnsmasq` enabled (with configuration for the above domain formats to route to 127.0.0.1 also) in an attempt to fix some issues before the split tunneling was configured correctly. And in an attempt to try and get Firefox to handle these DNS resolving issues. - `dig` on the command line for the same domain works just fine. - Adding hostnames to /etc/hosts works. But that's becoming a chore, working on dozens of projects over months.

Why is Firefox failing to resolve such domain names? Should I just create a Bugzilla issue?

I created a log with about:networking set to `timestamp,nsHostResolver:5`:

[Parent 5337: Main Thread]: I/Logger Flushing old log files 2021-06-09 07:42:58.009170 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver Resolving host [somedomain.localhost.type.nl]<^partitionKey=%28http%2Ctype.nl%29> - bypassing cache type 0. [this=7f4d8a1732e0] 2021-06-09 07:42:58.009195 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver No usable record in cache for host [somedomain.localhost.type.nl] type 0. 2021-06-09 07:42:58.009200 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver NameLookup host:somedomain.localhost.type.nl af:0 2021-06-09 07:42:58.009206 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver NameLookup: somedomain.localhost.type.nl effectiveTRRmode: 1 flags: 2001 2021-06-09 07:42:58.009210 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver TRR service not enabled - off or disabled 2021-06-09 07:42:58.009215 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver NativeLookup host:somedomain.localhost.type.nl af:0 2021-06-09 07:42:58.009229 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver DNS thread counters: total=1 any-live=0 idle=1 pending=1 2021-06-09 07:42:58.009236 UTC - [Parent 5337: Socket Thread]: D/nsHostResolver DNS lookup for host [somedomain.localhost.type.nl] blocking pending 'getaddrinfo' or trr query: callback [7f4d386f5e80] 2021-06-09 07:42:58.009250 UTC - [Parent 5337: DNS Resolver #22]: E/nsHostResolver DNS lookup thread - Calling getaddrinfo for host [somedomain.localhost.type.nl]. 2021-06-09 07:42:58.076889 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver Calling 'res_ninit'. 2021-06-09 07:42:58.137055 UTC - [Parent 5337: DNS Resolver #22]: E/nsHostResolver DNS lookup thread - lookup completed for host [somedomain.localhost.type.nl]: failure: unknown host. 2021-06-09 07:42:58.137146 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver nsHostResolver::CompleteLookup somedomain.localhost.type.nl 0 804B001E resolver=0 stillResolving=0 2021-06-09 07:42:58.137152 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver nsHostResolver record 7f4d63a0a7c0 new gencnt 2021-06-09 07:42:58.137162 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver Caching host [somedomain.localhost.type.nl] negative record for 60 seconds. 2021-06-09 07:42:58.137166 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver CompleteLookup: somedomain.localhost.type.nl has NO address 2021-06-09 07:42:58.137172 UTC - [Parent 5337: DNS Resolver #22]: D/nsHostResolver nsHostResolver record 7f4d63a0a7c0 calling back dns users status:804B001E

Asked by Alex 1 month ago

Last reply by Alex 2 days ago

Firefox add-ons (extensions) specifically IDM and Grammarly failed to load when opening firefox

Whenever I open my firefox browser (always up-to-date), certain add-on extensions specifically, IDM and Grammarly fail to load always. In order for them to load, I still … (read more)

Whenever I open my firefox browser (always up-to-date), certain add-on extensions specifically, IDM and Grammarly fail to load always. In order for them to load, I still need to go to the "manage extensions" then turn on-off in order for them to work. I have tried different solutions that this link provided link text but none of them worked. Can anyone offer a definite solution in my problem?

Asked by nagz06 2 days ago

Last reply by nagz06 1 day ago

Request Account Deletion

Hello Mozilla Team, I have a small problem. My home server was killed by a flood, so I lost my password manager (2FA & recovery code). The geo backup was unfortunatel… (read more)

Hello Mozilla Team,

I have a small problem.

My home server was killed by a flood, so I lost my password manager (2FA & recovery code). The geo backup was unfortunately a bit older and does not contain the data for my Mozilla account. This has now locked me out of my account, but I still want to delete it. I have read the article (https://support.mozilla.org/en-US/kb/what-if-im-locked-out-two-step-authentication), but I still have the right to delete my account and have my data deleted.

I would like to know who to email to get this started, Stay healthy, thanks for the help.

Asked by Sven 6 days ago

Last reply by Sven 4 days ago

Malware.Exploit.Agent.Generic, , Blocked, 0, 392684, 0.0.0, , -Exploit Data- Affected Application: Mozilla Firefox (and add-ons) Protection Layer: Protection Against OS Security Bypass Protection Technique: Exploit ROP gadget attack blocked

Firefox updated yesterday to ver 90.0.1 (64-bit). Today when I open Firefox browser, Malwarebytes blocks an exploit with thiis message: Malwarebytes www.malwarebytes.com… (read more)

Firefox updated yesterday to ver 90.0.1 (64-bit). Today when I open Firefox browser, Malwarebytes blocks an exploit with thiis message: Malwarebytes www.malwarebytes.com

-Log Details- Protection Event Date: 7/21/21 Protection Event Time: 1:37 PM Log File: 577494dc-ea4a-11eb-a649-54bf641896a0.json

-Software Information- Version: 4.4.2.123 Components Version: 1.0.1358 Update Package Version: 1.0.43331 License: Premium

-System Information- OS: Windows 10 (Build 19043.1110) CPU: x64 File System: NTFS User: System

-Exploit Details- File: 0 (No malicious items detected)

Exploit: 1 Malware.Exploit.Agent.Generic, , Blocked, 0, 392684, 0.0.0, ,

-Exploit Data- Affected Application: Mozilla Firefox (and add-ons) Protection Layer: Protection Against OS Security Bypass Protection Technique: Exploit ROP gadget attack blocked File Name: URL:


(end)


When I open in safe mode, no problem. I can not find the extension causing the problem

Asked by ItBme 1 week ago

Last reply by ItBme 6 days ago

"Sorry, we're having trouble playing this video." Video and GIFs on Facebook

I know this is an old issue. I'm getting it now, FF 90.0.2 64-bit, Windows 10 Pro N, Build 19041.vb_release.191206-1406. System updated. Not very often it starts playing … (read more)

I know this is an old issue. I'm getting it now, FF 90.0.2 64-bit, Windows 10 Pro N, Build 19041.vb_release.191206-1406. System updated. Not very often it starts playing for a fraction of a second. Videos and GIFs everywhere else (as far as places I normally go) plays as it should. Troubleshoot mode didn't solve it; hardware acceleration tweak neither. No crash logs.

Tried on the Edge and everything is fine.

Question: does the suggested "fix" on https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows embraces this issue as well? If so, sorry, but might be time to change browsers. The reason I'm using Windows 10 PRO ->N<- is exactly not to have to remove Windows Media Player and related "bloat" from my system. This isn't one of those crybaby threats I hate to read: it's a necessity.

I must ask: why on Edge, on the same machine, the same problem doesn't exist as in Firefox.

Suggestion for mentioned article: might be helpful point users (also) to the right place of The Media Feature Pack for N and KN versions of Windows 10, on https://www.microsoft.com/en-us/download/details.aspx?id=48231

Thanks

Asked by Luiz Castelo-Branco 6 days ago

Last reply by Luiz Castelo-Branco 5 days ago

cannot copy text from print preview

Hi. I'm a long time firefox user. The past few years, I have not been able to copy text from print preview. This is important to me, as I run a small business and need … (read more)

Hi.

I'm a long time firefox user. The past few years, I have not been able to copy text from print preview. This is important to me, as I run a small business and need to copy order numbers from the print preview screen to keep my work flow going. I can do this in chrome, but cannot in firefox.

It is nothing I can copy from a website, as it is a link I click to open the invoice.

The only work around that I know of would be to print the pdf to a file, open the file, and copy it from there - but this is not acceptable because it is too time consuming.

If anyone has something that will work, it would be much appreciated.

Asked by mlowe1971 1 day ago

Last reply by mlowe1971 17 hours ago

Firefox forgot me

I started Firefox yesterday and saw a message about not having been on for some time - which rang alarm bells for a daily user! Having time today to investigate, it seems… (read more)

I started Firefox yesterday and saw a message about not having been on for some time - which rang alarm bells for a daily user! Having time today to investigate, it seems that it's lost 6 months of history and bookmark changes (I'm only offered January or today!) Is there a way of recovering all that history (very helpful) and this Tuesday's bookmark set? Thanks Stephen

Asked by 4amk4a 6 days ago

Firefox for Windows upgrade to Ver 89 Messes With Toolbar

Firefox for Windows make major change in Toolbar in version 89 upgrade: New in version 89: Say hello to a fresh new Firefox, designed to get you where you want to go ev… (read more)

Firefox for Windows make major change in Toolbar in version 89 upgrade: New in version 89: Say hello to a fresh new Firefox, designed to get you where you want to go even faster. We’ve redesigned and modernized the core experience to be cleaner, more inviting, and easier to use. Beginning in 89, you’ll notice a number of changes, including: Simplified browser chrome and toolbar: Less frequently used items removed to focus on the most important navigation items. How do I avoid Firefox deleting lesser used links in my Toolbar? They are there for a reason.

Asked by BillGray 6 days ago

Context menu

People, have Firefox 32x v89.0.2. Say me please, how return into context menu propertys of downloading picture (size,type,ext,KBytes)? Screenshot enabled. On the screen p… (read more)

People, have Firefox 32x v89.0.2. Say me please, how return into context menu propertys of downloading picture (size,type,ext,KBytes)? Screenshot enabled. On the screen picture propertys visible only in heading of window (red), cont menu not ScrShoting  ;*( . All this propertys may be viewing on tab "Info about page" => "multimedia" => "info about picture".

In ver 60-70 (if my memory not wrong) if you open picture on new tab and save it on the harddisc this propertys also be in context menu "save PNG 320x240....." and 'SHIFT+' catapult you to the propertys multimedia of "info ab page". Where it lost?

Is it possible to convince the developers to return as it was?

With respect, PaulSnowMan@yandex.ru

Asked by SnowMan 1 day ago

System volume raised to 100% everytime firefox browser is focused no matter if there is a page opened in Windows 10

Hi! When I adjust a volume (Ej. 30%) elsewhere, when change the focus to Firefox browser, the volume automatically raised to 100% no matter if the page or pages are in b… (read more)

Hi! When I adjust a volume (Ej. 30%) elsewhere, when change the focus to Firefox browser, the volume automatically raised to 100% no matter if the page or pages are in blank or with content. And when I change to other application, the volume is back to original state (in this case 30%). Yes, it changes system volume, not the app volume. Searched all over internet and couldn't find solution.

Tried: - Deactivate all sound enhancement. - Deactivate sound lowering in call. - Change sound card (realtek to Nvidia) - Change output (back panel, front panel) - Updated drivers - Unplugged periphericals - Deactivate Control media via keyboard, headset, or virtual interface - Changed media.default_volume in about:config Nothing works

This only happen with Firefox and Chrome browsers. Microsoft edge, games and other multimedia apps has not problem.

I am using AMD Ryzen 5600X Asus TUF b550m 16GB RAM

Firefox 90.0.2 Windows 10, Version 20H2, Build 19042.1110

Hope we could find a solution. This is very annoying when using a headset. Regards

Asked by Axent 5 days ago

opening PDF documents from 3-5 years ago

Hello There are a number of PDF documents on my computer that unfortunately won't open in Firefox. Firefox is my default for opening PDF documents but I also tried Micros… (read more)

Hello

There are a number of PDF documents on my computer that unfortunately won't open in Firefox. Firefox is my default for opening PDF documents but I also tried Microsoft edge and they didn't open on that either. Some of them are from 2 1/2 years ago, some say 4-6 years ago. These files used to open on my computer without problems but alas not anymore! :( When I try to open them in Firefox I get a completely blank document with no error message. When I try instead to open them with microsoft edge I get the following error "We can't open this file. Something went wrong"

Thanks!

Asked by username12345 3 days ago

Last reply by username12345 3 days ago

Pocket install asks to confirm non-existant email address and no way to change

I upgraded to V90.0.2 and tried to install Pocket. The popup gave me an old email address that does not exist, so I changed it to my current email address, logged in, bu… (read more)

I upgraded to V90.0.2 and tried to install Pocket. The popup gave me an old email address that does not exist, so I changed it to my current email address, logged in, but then pocket said it needed to use my email address, but the old email address was in the box and there was no way to change my old email address.

I came here and logged in using my old email address, but I had updated the account so it had my new email address. I logged out and logged in with my new email address, and my settings were the same, with my new email address and my new alternate email address.

No where was my old email address listed for me to change or delete. I see no way to tell FF that email no longer exists. Confusing, I know.

Asked by ChrisG 4 days ago

обновление

После обновление на версию 90.02 64 бит в админке нашего сайта перестал вставляться текст из буфера обмена. В чем причина? Как вернуть предыдущую версию, где все работало… (read more)

После обновление на версию 90.02 64 бит в админке нашего сайта перестал вставляться текст из буфера обмена. В чем причина? Как вернуть предыдущую версию, где все работало? Или сделайте СРОЧНО новую, полностью работоспособную версию! After updating to version 90.02 64 bit, text from the clipboard stopped being inserted in the admin panel of our site. What is the reason? How do I revert to a previous version where everything worked? Or make an URGENTLY new, fully functional version! Send the answer to the address: zmu@zmupost.ru

Asked by Zubor 4 days ago

Unable to stream/listen online with SiriusXM

I've been streaming SiriusXM on my Mac with Firefox for years but recently it's stopped working. SiriusXM tells me it' a Firefox problem, that I need to change browsers … (read more)

I've been streaming SiriusXM on my Mac with Firefox for years but recently it's stopped working. SiriusXM tells me it' a Firefox problem, that I need to change browsers to listen to SiriusXM. I like Firefox and don't want to switch. Can anyone help?

Asked by Don5 1 day ago

Last reply by Don5 19 hours ago

Problem changing my primary email.

Hi All - I need to change my Primary email address to allow me to Sync. When I type in the Secondary email address a message comes up saying it can't be the same as the … (read more)

Hi All -

I need to change my Primary email address to allow me to Sync. When I type in the Secondary email address a message comes up saying it can't be the same as the Primary address despite the Primary address displaying as a different address. No idea how to get out of the loop.

Any ideas?

Thanks,

Ian.

Asked by IanMcPherson 5 days ago

Last reply by IanMcPherson 5 days ago

AOL emails taking forever to load after logging in password

There was a previous question posted re: this same issue. I tried those suggestions and I am still having the problem. I can get to the login page, enter my password and … (read more)

There was a previous question posted re: this same issue. I tried those suggestions and I am still having the problem. I can get to the login page, enter my password and then get the connecting to the crsp.yahoo.com thing and then it takes forever to load emails. I don't have problem with Edge.

Asked by digger618 1 day ago

Oficina Registradora Acreditadora de Certificados Digitales

Buenos días: Para acreditar los Certificados Digitales tengo un problema: Ahora y durante todo el día siempre me aparece el siguiente mensaje: [ " signText running... … (read more)

Buenos días: Para acreditar los Certificados Digitales tengo un problema: Ahora y durante todo el día siempre me aparece el siguiente mensaje: [ " signText running... You see this message because of your browser's limitations. Please consider using signTextAsync. Close this window when signing has finished " ]

-  La versión de Firefox que instalo y con la que únicamente funciona la acreditación es: 56.0.2  para windows de 64 bits

Cuando instalo las demás versiones nunca me funciona la acreditación del Certificado Digital. - He desinstalado y vuelto a instalar la Autofirma para Windows de 64 bits. - También he instalado el ConfiguradorFNMT. - Además, en el navegador, Opción Privacidad y Seguridad, Certificados, Autoridades FNMT: está todo activo en "Sitio de Confianza". El complemento para Firefox que tengo instalado es signText JSplus , y siempre funciona pero ahora no. Este problema ha surgido al cambiar mi certificado digital caducado (eliminado) e instalar el nuevo. Por favor, ruego me ayuden ustedes. En nuestra localidad no hay equipo informático. La única técnica soy yo y por más que intento, no logro solucionarlo. En espera de su respuesta. Gracias

Asked by guadalinfo.alhamadealmeria 1 day ago

"Do this automatically for files like this from now on" does not work

I am using Firefox 90.0.2 on a Dell laptop. When I run a report from the software Workday, and choose to download it, the "What should Firefox do with this file" always c… (read more)

I am using Firefox 90.0.2 on a Dell laptop. When I run a report from the software Workday, and choose to download it, the "What should Firefox do with this file" always comes up, despite the fact that I have the "Do this automatically for files like this from now on" option box checked. I also have gone to the place in Settings where you identify what application to open with different file types. I have identified Excel for Microsoft Excel Worksheets, and Adobe Acrobat for .pdf files.

It is very annoying that the box comes up every time. I'd appreciate any suggestions. Thank you!

Asked by l.deason 15 hours ago

Brother and Epson Printers printing blank pages from an online web site, chrome seems to be okay printing the same pages

Both printers, (Epson and Brother) I have will not print pages from an online website, if I switch to chrome it prints fine. When using FF the pages go thru the printer… (read more)

Both printers, (Epson and Brother) I have will not print pages from an online website, if I switch to chrome it prints fine. When using FF the pages go thru the printers, but come out blank, i.w. they do not print

Asked by bkg 14 hours ago