Questions tagged [dns]

Suitable use of this tag is for all processes and protocols for doing name to address translation locally on Apple products as well as in general relating to his DNS works.

88 questions with no upvoted or accepted answers
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373 views

iPhone using cellular data even if disabled

I'm currently abroad and my carrier is charging absurd fees for data plan. I decided to turn off completely cellular data and rely only on WiFi but my iPhone is still using few KBs of data every day. ...
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40 views

MacOS prefer /etc/hosts over DNS

My Mac is running dual stack IPv4/IPv6 which works fine. In my /etc/hosts I have added a IPv4 pointer to my development VM like so: website.test 10.10.10.35 This works fine. But I noticed that some ...
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Cannot flush cache

No matter what I do, I cannot get a web site to load after something changes with the DNS. For instance, if meh.blah.example.com had a misconfigured DNS value and produced an ERR_NAME_NOT_RESOLVED ...
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Safari and Chrome loading the wrong website

My client is having an issue that is exclusive to her computer. When viewing her website on any other computer the website that shows is the current one being hosted by Squarespace. When viewing on ...
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464 views

How to run 'named' (bind) on Sierra?

Many OS versions ago, I ran a local copy of 'bind' for my in-home LAN. I noticed that it made a huge difference in the speed of name resolution. Performance of my local internet connections is ...
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472 views

Macbook Pro not loading insecure webpages/content in any browser

Forgive me if this is the wrong place to ask this, but I've run out of options. Within the past week or two my web browsers will not load anything unless it has 'https' in front of it. I am a web ...
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918 views

Unable to connect to localhost on my development machine

I'm configuring a new Web development machine using the very complete and well-written guide published by Echo Software but I cannot connect to localhost after following/checking every step. My only ...
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93 views

Repeat DNS flushing required on El Capitan

I have a mid-2011 Mac Air running OS 10.11.3 and I repeatedly have to run a DNS flush to resolve issues connecting to the internet. This seems to be a recent problem and I don't know what has caused ...
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95 views

DNS fails over time. Reconnecting to wifi solves it momentarily

The DNS lookup fails after some time of being connected. I can get it back working if i reconnect to my wifi. However it seems to happen more frequently. I enabled debugging in the mDNS responder to ...
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349 views

OSX Flush DNS without sudo

I have a Mac that keeps messing up its DNS (this may be a wider network issue, we have windows clients that are having problems too). Whilst I try to understand the DNS issue I'd like to set an 'icon' ...
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1k views

yosemite DNS resolution woes over IPSec tunnels / VPN

I am connecting to a Cisco IPSec tunnel from MacOS to a hosted pfsense box that is running a number of other IPSec site-to-sites happily, and the DNS resolution is not working. I also am in full ...
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296 views

How can I prevent hostname from changing?

When I boot up one of our computers it gets a static DHCP address which is specified in our DNS as client1.domain.com and so on. The hostname sets automatically from reverse DNS at bootup and ...
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2k views

iOs Simulator ignoring Hosts file

I'm actually working on a website development and I configured all the needed hostname on my /etc/hosts files. Actually in our office we use an internal DNS for the QA servers and we override ...
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107 views

Changing /etc/hosts not getting affected

I have added the following line in my /etc/hosts: 127.0.0.1   myapp.corp.com so my full /etc/hosts looks like: 127.0.0.1 localhost 127.0.0.1   myapp.corp.com 255.255.255.255 broadcasthost ::1 ...
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227 views

DNS Lookup Failure on Terminal Only (Mavericks)

I recently did a clean install of Mavericks, and ever since I have, I've been having intermittent DNS lookup failures on the terminal only. Browsers work fine (Chrome, Safari). But nothing works ...
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68 views

named (bind DNS) not quitting

I am trying to quit named, but it keeps popping up. I tried removing the configuration an key files, unloading it from launchd, you name it. Yet it keeps starting. How do I kill it permanently?
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2k views

system.log is flooded with mDNSResponder messages: “queryrecord_result_callback:…”

My Mac is constantly writing the same following error message to system.log: ... Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Lock: Locking failure! mDNS_busy (1) != ...
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1k views

Ping cannot resolve .io domains yet nslookup can

macOS 10.12.1 (16B2555) on an early 2015 Macbook Pro. I can't resolve any .io domains on this machine. Other people on the same network can. This happens here at the office, and at home. I've ...
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1k views

DNS change on Airport Extreme

I've recently changed the DNS settings on my latest generation Airport Extreme from their default values to Google DNS. My reason was obvious, I want all of my devices connected to my network be able ...
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90 views

How can I modify the hosts file on MacOS Catalina?

I need to test out a site before it's actually live for customers, and doing so with a specific hostname. For this I'd like to modify the well-known hosts file, however it doesnt seem to work. An ...
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49 views

Why doesn't my system allow me to enter my Admin Password in Terminal when I try to flush my DNS Cache?

I've tried the sudo killall mDNSResponder; sleep 2; echo macOS DNS Cache Reset but when the Password symbol appears its locked and won't allow me to put in my Admin Password? Anyone ever seen this or ...
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Latency spikes when Ping or SSH to Macbook Pro 15(2017) macOS Catalina 15.4

I have noticed that when trying to connect to macOS Catalina through ssh over local wireless network, the connection will encounter a serious latency problem, which makes me hard to type into anything ...
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43 views

I disabled mDNSResponder and now can't use Firefox, but can connect through Opera (Chromium based)

I'm trying to harden my macOS, and have read that mDNSResponder has some vulnerabilities, so I disabled it (after disabling SIP, then restarted with SIP turned on). So now I can't connect to Internet....
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22 views

err_address_unreachable : Cannot reach websites except some

I'm running on macOS Catalina. The Wi-Fi at my work was reset and now I can connect to internet but only Google Gmail and a few other big companies' websites load, no others. I tried manually ...
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66 views

Mac ping seems to cache DNS, how to stop this behavior

I have a split DNS situation happening. I have updated the DNS record on both local and public DNS servers. nslookup recognizes that the A record has been updated: user@MacBook-Pro:~ $ nslookup ...
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22 views

How to make Chrome look for local DNS

MacOS Version: 10.14.5 Chrome Version: 75.0.3770.100 I have entered an entry in my /etc/hosts like below ## # Custom hosts ## 127.0.0.1 jupyter.dev ::1 jupyter.dev My traceroute ...
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2k views

How to prevent DNS caching on iOS

Does anyone know how to prevent DNS caching on iOS? My DNS cache keeps getting fouled up and it causes all sorts of issues that affect: Population of the bonjour pane in the VNC app Detection of ...
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1k views

Why is IMRemoteURLConnectionAgent contacting a Charter IP address

I never use iMessage. I never use iCloud. And yet I happened to check my Mac's current network connections and I found this: IMRemoteURLConn 33557 me 7u IPv4 ... 0t0 TCP 192.168.1.198:57996-&...
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877 views

How is iOS to host communication done with TCP to USB?

I am looking for a good primer on information about accessing the data streamed from iOS devices to a host via USB. I've found this is done through TCP, I think. But concrete info is what I'm looking ...
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31 views

Website unresolved via OSX Safari

Issue URL does not resolve: see 'dig test results' Safari 11.1.2 System Version: OS X 10.11.6 (15G22010) Kernel Version: Darwin 15.6.0 Boot Volume: Macintosh HD Boot Mode: Normal The ...
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345 views

DNS Setup on a Per-SSID basis?

I manage a number of iOS devices. These devices are supervised via Apple Configurator. When they connect to a specific SSID, I want the devices to use the servers specified by DHCP (If needed, I can ...
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259 views

editing DNS rules locally in macOS 10.12

When I develop web sites I like to have them run locally and responding to a more useful name than localhost/site. It used to be you could write rules in hosts pointing to 127.0.0.1. It would seem you ...
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358 views

Yosemite, how to reset/reinstall network?

For some reasons every time I connect to an insecure WiFi, Yosemite cannot route to the DNS servers of that WiFi. The DNS servers are correctly set, just cannot reach them. And after installing ...
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96 views

Ping being hijacked?

On my Mac terminal, I typed cat /etc/resolv.conf nameserver 8.8.8.8 nameserver 8.8.4.4 and I do a dig dig www.facebook.com ; <<>> DiG 9.8.3-P1 <<>> www.facebook.com ;; ...
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325 views

Can I fix DNS issues on MBP for good?

I noticed DNS issue on my MBP where all of sudden (in the middle of my work, nothing changed) my DNS simply stops working. It's easy to notice that, so I do the following: first I check if DNS is ...
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880 views

OS X Server Profile Manager port forwarding?

I am setting up a MDM server on OS X Server. This is just a personal project, so I am hosting off of my iMac running Yosemite and OS X Server. I have configured port forwarding and DNS records so ...
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2k views

OSX Open Directory Network Users Problem and Kerberos

I've got a Mavericks Server mostly working, but I still get some funkiness. Main problem is that I've been having a great deal of trouble getting network user accounts with home directories on the ...
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822 views

DNS Problem with my Macbook Pro

I have a problem with my Macbook Pro. I suspend it and if I should open it up and the wifi is connected and all looks pretty well. But I have no connection with my DNS Server. Other devices works well....

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