Question Annoying DNS reset ?

Aug 1, 2022
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Hi All,

Roughly 7-8 months ago I tried getting Google Fiber. I ended up going back to Xfinity and getting the higher speed internet with them instead. After connecting any computer or device to the Xfinity router with the correct credentials, my TCP/IP keeps trying to go back to the Google Fiber homepage. I now have to manually set my router, IPv4 address, and subnet to the Xfinity information. This is super annoying having to do this every time for every device. I have also scanned my Mac with Bitdefender and Malware Bytes (free version) and got nothing back. Can someone please help me?
 

Ralston18

Titan
Moderator
What modem do you have? Which Xfinity router? Or do you have a combined modem/router?

Connectivity being:

ISP (Xfinity) === (Coax)===> Modem [LAN port] ---- Ethernet cable ---> [WAN port] Router [LAN ports] --- Ethernet ---> wired devices and ~~~ Wireless ~~~> wireless devices.

Feel free to edit and correct my line diagram as necessary.

Do you have any Windows devices in the network? If so, run "ipconfig /all"(without quotes) via the Command Prompt and post the results.
 
Aug 1, 2022
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Hi Ralston18,

It is an Xfinity combo router and modem. It is newer, tall, white, and used for fiber connections.

Forgive me, but I don't know all the terms. My diagram is below.

Modem/router -- coax in wall (I'm guessing all ethernet goes through here)

All devices connect to WIFI connection from this modem/router connection in living room.

I have one Windows device that is connected to the WIFI, but it is a work computer and I cannot do what you need. I'm not trying to be rude, but I could get in some trouble showing anything on their machine.

Anything on my MacBook I am happy to show.

Thanks,

John
 
Aug 1, 2022
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What modem do you have? Which Xfinity router? Or do you have a combined modem/router?

Connectivity being:

ISP (Xfinity) === (Coax)===> Modem [LAN port] ---- Ethernet cable ---> [WAN port] Router [LAN ports] --- Ethernet ---> wired devices and ~~~ Wireless ~~~> wireless devices.

Feel free to edit and correct my line diagram as necessary.

Do you have any Windows devices in the network? If so, run "ipconfig /all"(without quotes) via the Command Prompt and post the results.
Here is the ipconfig on my MacBook:

Last login: Mon Aug 1 19:02:46 on console

[Moderator edit to remove personal information]
@JohnS-MacBook-Air ~ % ifconfig -a

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384

options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>

inet 127.0.0.1 netmask 0xff000000

inet6 ::1 prefixlen 128

inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1

nd6 options=201<PERFORMNUD,DAD>

gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280

stf0: flags=0<> mtu 1280

anpi1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 1e:80:30:1a:f8:66

inet6 fe80::1c80:30ff:fe1a:f866%anpi1 prefixlen 64 scopeid 0x4

nd6 options=201<PERFORMNUD,DAD>

media: none

status: inactive

anpi0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 1e:80:30:1a:f8:65

inet6 fe80::1c80:30ff:fe1a:f865%anpi0 prefixlen 64 scopeid 0x5

nd6 options=201<PERFORMNUD,DAD>

media: none

status: inactive

en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 1e:80:30:1a:f8:45

nd6 options=201<PERFORMNUD,DAD>

media: none

status: inactive

en4: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 1e:80:30:1a:f8:46

nd6 options=201<PERFORMNUD,DAD>

media: none

status: inactive

en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

options=460<TSO4,TSO6,CHANNEL_IO>

ether 36:54:22:d7:1c:00

media: autoselect <full-duplex>

status: inactive

en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

options=460<TSO4,TSO6,CHANNEL_IO>

ether 36:54:22:d7:1c:04

media: autoselect <full-duplex>

status: inactive

bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=63<RXCSUM,TXCSUM,TSO4,TSO6>

ether 36:54:22:d7:1c:00

Configuration:

id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0

maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200

root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0

ipfilter disabled flags 0x0

member: en1 flags=3<LEARNING,DISCOVER>

ifmaxaddr 0 port 8 priority 0 path cost 0

member: en2 flags=3<LEARNING,DISCOVER>

ifmaxaddr 0 port 9 priority 0 path cost 0

nd6 options=201<PERFORMNUD,DAD>

media: <unknown type>

status: inactive

ap1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 3e:a6:f6:1f:9a:46

nd6 options=201<PERFORMNUD,DAD>

media: autoselect

status: inactive

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether 3c:a6:f6:1f:9a:46

inet6 2601:c6:4180:1a20::90b prefixlen 64 dynamic

inet6 fe80::1cda:3c4f:b4e0:3d39%en0 prefixlen 64 secured scopeid 0xc

inet6 2601:c6:4180:1a20:c19:8140:c22e:5ecd prefixlen 64 autoconf secured

inet6 2601:c6:4180:1a20:7878:d236:2c90:8c02 prefixlen 64 autoconf temporary

inet6 2601:c6:4180:1a20::8519 prefixlen 64 dynamic

inet 10.0.0.82 netmask 0xffffff00 broadcast 10.0.0.255

nd6 options=201<PERFORMNUD,DAD>

media: autoselect

status: active

awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether b2:b6:12:53:bd:89

inet6 fe80::b0b6:12ff:fe53:bd89%awdl0 prefixlen 64 scopeid 0xd

nd6 options=201<PERFORMNUD,DAD>

media: autoselect

status: active

llw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500

options=400<CHANNEL_IO>

ether b2:b6:12:53:bd:89

inet6 fe80::b0b6:12ff:fe53:bd89%llw0 prefixlen 64 scopeid 0xe

nd6 options=201<PERFORMNUD,DAD>

media: autoselect

status: active

utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380

inet6 fe80::809f:b580:ad46:85da%utun0 prefixlen 64 scopeid 0xf

nd6 options=201<PERFORMNUD,DAD>

utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000

inet6 fe80::1c9f:11eb:2fb9:da79%utun1 prefixlen 64 scopeid 0x10

nd6 options=201<PERFORMNUD,DAD>

[Moderator edit to remove personal information]
@JohnS-MacBook-Air ~ %
 
Last edited by a moderator:

Ralston18

Titan
Moderator
I am not familiar with the IP config settings for a MacBook.

However any network device should have only one network adapter enabled either wired or wireless not both at the same time.

In your environment I would expect to see only wireless network adapters enabled with regards to Mac devices and Windows devices.

Will need to defer to Mac Users with regards to what is and is not configurable in that respect.

= = = =

I did edit out two instances of personal information the appeared in your ipconfig results.

No problem with not being able to provide the Windows result from a work computer. Not an unusual situation.

But you can check that the work computer does not have two network adapters enabled or perhaps duplicating an IP address.

Connectivity:

ISP (Xfinity) === fiber ===> [Converter (optic to coax)] --- coax cable ---->Wall outlet ----- coax ----> Modem/Router ~~~ Wireless ~~~> wireless devices.

The Converter should be mounted close to where the fiber run comes into your home. Likely mounted on the outside - see if you can find it.

On the modem router is there an admin login or password information printed on the label? Or a model number of some sort. Not asking for that information just need to know if it is there. Hopefully the admin login and password have been changed by you to values only you know.

It could be that you need admin rights to reconfigure the modem/router to not use/default to Google Fiber.

The configuration setting may be in your browser as well.

FYI:

https://www.idownloadblog.com/2022/02/16/how-to-change-default-browser-mac/

Google Fiber app could be involved:

https://apps4mac.com/google-fiber-app-for-mac/
 
Aug 1, 2022
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Hi Ralston18, thank you for your help. I have changed the router/modem name and password. The model is on a sticker on the bottom of the router/modem.

Would I need to make sure the Google Fiber app is uninstalled? It shouldn't be on my machine.
 

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