Ethernet Won't connect, problem with Connection-Specific DNS Suffix

Clbgrdnr · Sep 11, 2016

I live in the dorms at school. Our school uses some sort of authentication when you plug in your Ethernet cable. You go to their website or google and then it's redirected to a webpage where you sign in your username and password details to acquire internet access. My problem came up when I was playing a video game and the Ethernet cable was yanked out of my laptop accidentally by a friend. When I tried to plug it back in a popup from windows 10 came to the side about how I should treat the network and I accidentally clicked an option (no clue what the options were). Afterward, I could not connect to the internet.

I've been researching this myself to figure out what is wrong. A different ethernet cord in another room also had the same issue, so It had to be something wrong with the network settings. I went to command prompt and looked at my ipconfig and noticed that the Connection-specific DNS suffix was stuck on my school's website address. Even after flushing the DNS the connection-specific DNS suffix does not go away. In the IPv4 properties obtain an IP address automatically, and obtain DNS server address automatically are checked. In Advanced TCP/IP settings: IP addresses has IP address and Subnet mask on the same line and DHCP Enabled. Default gateways: has Gateway and Metric on the same line and automatic metric is checked. Under DNS settings: the top box is blank, append primary and connection specific DNS suffixes and append parent suffixes of the primary DNS suffix are both clicked. Append these DNS suffixes is blank, and Register this connection's addresses in DNS is clicked.

I'm assuming it's a problem with DNS or a profile my computer has loaded on it due to me stupidly clicking the popup without thinking. Any help would be great.

Here's my ipconfig /all:

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-FO0MHUO
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : uic.edu

Wireless LAN adapter Local Area Connection* 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 60-57-18-DA-60-48
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : uic.edu
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 80-FA-5B-15-E7-EE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a0ec:76e1:7ad:c36%6(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.137(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, September 11, 2016 4:04:27 PM
Lease Expires . . . . . . . . . . : Monday, September 12, 2016 4:04:25 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 75561563
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1E-69-D8-08-80-FA-5B-15-E7-EE
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Connection-specific DNS Suffix Search List :
uic.edu

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 60-57-18-DA-60-4B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : uic.edu
Description . . . . . . . . . . . : Intel(R) Dual Band Wireless-AC 7265
Physical Address. . . . . . . . . : 60-57-18-DA-60-47
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.uic.edu:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : uic.edu
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

GentleArrow · Sep 11, 2016

"I'm assuming it's a problem with DNS "

It's not.

"it's redirected to a webpage where you sign in "

That is called a captive portal.

"Ethernet cable was yanked out of my laptop"

Odds are the physical port was damaged. Is the laptop under warranty?

Clbgrdnr · Sep 12, 2016

It is definitely not a damaged Ethernet port, the computer while plugged into the Ethernet realizes that Ethernet is plugged in, and besides the Ethernet cord I was using when it was yanked out had to be taped to the table or it fell out on it's own. Under status it shows 100Mbps speed, and it is sending and receiving cookies. It just won't redirect to the captive portal. I can get WiFi access through the school WiFi.

The differences between the WiFi connection and the Ethernet connection are only concerning the IPv4. Notice how the wireless has 10.65.218.5 and the Ethernet shows 192.168.1.1 (my ipconfig below while connected to wireless and have Ethernet plugged in). This must be some sort of bug with the DNS settings, drivers, registries... I'm just not knowledgeable enough to understand what is wrong.

Windows IP Configuration

Wireless LAN adapter Local Area Connection* 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : uic.edu
Link-local IPv6 Address . . . . . : fe80::a0ec:76e1:7ad:c36%6
IPv4 Address. . . . . . . . . . . : 192.168.1.137
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . : uic.edu
Link-local IPv6 Address . . . . . : fe80::95fd:50df:be40:45ba%4
IPv4 Address. . . . . . . . . . . : 10.65.218.5
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Default Gateway . . . . . . . . . : 10.65.216.1

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 3:

Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:1450:3871:7c3e:5b82
Link-local IPv6 Address . . . . . : fe80::1450:3871:7c3e:5b82%5
Default Gateway . . . . . . . . . : ::

Tunnel adapter isatap.uic.edu:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : uic.edu

GentleArrow · Sep 12, 2016

good thing about the cord

not seeing anything wrong with your wifi or Ethernet. They are connecting to two different networks.

Post a pic of your network conections so we can see the listed interfaces also the list of networks would be nice

Did you check your firewall settings? Perhaps you blocked the Ethernet network

Clbgrdnr · Sep 12, 2016

Hey Gentlearrow,

Thanks for suggesting the firewall issues. I disabled windows firewall, tried connecting and it didn't work, but then I flushed DNS and was finally able to get the authentication portal.

Ethernet Won't connect, problem with Connection-Specific DNS Suffix

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