DNS server shows IPv6 instead of IPv4 for Ethernet adapter and Ethernet not working
Recently my Ethernet stopped working and when I ran ipconfig /all, it showed IPv6 addresses for the DNS servers instead of the usual IPv4. I don't know what the problem is and I can't find a solution on how to make it switch back to IPv4.
I don't remember making any changes to my computers network settings although I was coding with sockets earlier but that was over WiFi so I don't think that could have affected the Ethernet settings.
I have also tried uninstalling and reinstalling the driver and rebooting my computer but none of that seems to fix the problem. Any solutions?
DNS Servers . . . . . . . . . . . :
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
windows networking dns ethernet ipv6
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
|
show 4 more comments
Recently my Ethernet stopped working and when I ran ipconfig /all, it showed IPv6 addresses for the DNS servers instead of the usual IPv4. I don't know what the problem is and I can't find a solution on how to make it switch back to IPv4.
I don't remember making any changes to my computers network settings although I was coding with sockets earlier but that was over WiFi so I don't think that could have affected the Ethernet settings.
I have also tried uninstalling and reinstalling the driver and rebooting my computer but none of that seems to fix the problem. Any solutions?
DNS Servers . . . . . . . . . . . :
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
windows networking dns ethernet ipv6
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
1
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
1
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
Sounds like your DHCP server isn’t working. Please provide the entire output ofipconfig /all, preferably only for the relevant network interface.
– Daniel B
Dec 5 '16 at 9:40
|
show 4 more comments
Recently my Ethernet stopped working and when I ran ipconfig /all, it showed IPv6 addresses for the DNS servers instead of the usual IPv4. I don't know what the problem is and I can't find a solution on how to make it switch back to IPv4.
I don't remember making any changes to my computers network settings although I was coding with sockets earlier but that was over WiFi so I don't think that could have affected the Ethernet settings.
I have also tried uninstalling and reinstalling the driver and rebooting my computer but none of that seems to fix the problem. Any solutions?
DNS Servers . . . . . . . . . . . :
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
windows networking dns ethernet ipv6
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
Recently my Ethernet stopped working and when I ran ipconfig /all, it showed IPv6 addresses for the DNS servers instead of the usual IPv4. I don't know what the problem is and I can't find a solution on how to make it switch back to IPv4.
I don't remember making any changes to my computers network settings although I was coding with sockets earlier but that was over WiFi so I don't think that could have affected the Ethernet settings.
I have also tried uninstalling and reinstalling the driver and rebooting my computer but none of that seems to fix the problem. Any solutions?
DNS Servers . . . . . . . . . . . :
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
windows networking dns ethernet ipv6
windows networking dns ethernet ipv6
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
edited Dec 5 '16 at 9:48
Daniel B
34.1k76387
34.1k76387
asked Dec 5 '16 at 9:02
J leongJ leong
615
asked Dec 5 '16 at 9:02
J leongJ leong
615
asked Dec 5 '16 at 9:02
J leongJ leong
615
615
1
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
1
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
Sounds like your DHCP server isn’t working. Please provide the entire output ofipconfig /all, preferably only for the relevant network interface.
– Daniel B
Dec 5 '16 at 9:40
|
show 4 more comments
1
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
1
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
Sounds like your DHCP server isn’t working. Please provide the entire output ofipconfig /all, preferably only for the relevant network interface.
– Daniel B
Dec 5 '16 at 9:40
1
1
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
1
1
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
Sounds like your DHCP server isn’t working. Please provide the entire output of
ipconfig /all, preferably only for the relevant network interface.– Daniel B
Dec 5 '16 at 9:40
Sounds like your DHCP server isn’t working. Please provide the entire output of
ipconfig /all, preferably only for the relevant network interface.– Daniel B
Dec 5 '16 at 9:40
|
show 4 more comments
2 Answers
2
active
oldest
votes
There's something clearly wrong with your network. Your ipconfig output shows a link local address which essentially means you aren't getting an IP address at all. The fec0 addresses are the IPv6 equivalent of 169.254.x.x ( address which occur when you have some network connectivity, but there are issues with getting an IP address.
There are a few possibilities - there's something wrong with the IPv4 settings (double check these!) or your Ethernet adapter is borked. In this case, since you're not getting an IP address (which is the real issue), we can probably start there.
I'd try the Ethernet adapter with static settings as well. Since DHCP leases last a while renewing leases or restarting your router would be an idea.
edited Dec 5 '16 at 10:54
Seth
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
add a comment |
Your Ethernet adapter config suggests a possible DHCP issue. DHCP is enabled on the client, but your IPv4 address is an APIPA address, suggesting that the client was unable to receive an address from the DHCP server. That would explain why the IPv6 addresses are listed for DNS Servers. Client often receive default gateway and DNS information via DHCP scope options.
The IPv6 addresses you listed are reserved site-local addresses (RFC 3879), which is deprecated, but for some still employed in cases like this. I hesitate to compare site-local addressing directly with APIPA, as link-local addresses are a closer comparison.
I was able to dig up an interesting article on site-local addresses. It explains the relationship between site-local addresses and DNS in more depth.
https://www.howfunky.com/2015/10/ipv6-site-local-addresses-why-are-those.html
All that to say, I would start looking at DHCP.
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
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oldest
votes
There's something clearly wrong with your network. Your ipconfig output shows a link local address which essentially means you aren't getting an IP address at all. The fec0 addresses are the IPv6 equivalent of 169.254.x.x ( address which occur when you have some network connectivity, but there are issues with getting an IP address.
There are a few possibilities - there's something wrong with the IPv4 settings (double check these!) or your Ethernet adapter is borked. In this case, since you're not getting an IP address (which is the real issue), we can probably start there.
I'd try the Ethernet adapter with static settings as well. Since DHCP leases last a while renewing leases or restarting your router would be an idea.
edited Dec 5 '16 at 10:54
Seth
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
add a comment |
There's something clearly wrong with your network. Your ipconfig output shows a link local address which essentially means you aren't getting an IP address at all. The fec0 addresses are the IPv6 equivalent of 169.254.x.x ( address which occur when you have some network connectivity, but there are issues with getting an IP address.
There are a few possibilities - there's something wrong with the IPv4 settings (double check these!) or your Ethernet adapter is borked. In this case, since you're not getting an IP address (which is the real issue), we can probably start there.
I'd try the Ethernet adapter with static settings as well. Since DHCP leases last a while renewing leases or restarting your router would be an idea.
edited Dec 5 '16 at 10:54
Seth
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
add a comment |
There's something clearly wrong with your network. Your ipconfig output shows a link local address which essentially means you aren't getting an IP address at all. The fec0 addresses are the IPv6 equivalent of 169.254.x.x ( address which occur when you have some network connectivity, but there are issues with getting an IP address.
There are a few possibilities - there's something wrong with the IPv4 settings (double check these!) or your Ethernet adapter is borked. In this case, since you're not getting an IP address (which is the real issue), we can probably start there.
I'd try the Ethernet adapter with static settings as well. Since DHCP leases last a while renewing leases or restarting your router would be an idea.
edited Dec 5 '16 at 10:54
Seth
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
There's something clearly wrong with your network. Your ipconfig output shows a link local address which essentially means you aren't getting an IP address at all. The fec0 addresses are the IPv6 equivalent of 169.254.x.x ( address which occur when you have some network connectivity, but there are issues with getting an IP address.
There are a few possibilities - there's something wrong with the IPv4 settings (double check these!) or your Ethernet adapter is borked. In this case, since you're not getting an IP address (which is the real issue), we can probably start there.
I'd try the Ethernet adapter with static settings as well. Since DHCP leases last a while renewing leases or restarting your router would be an idea.
edited Dec 5 '16 at 10:54
Seth
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
edited Dec 5 '16 at 10:54
Seth
6,35611128
edited Dec 5 '16 at 10:54
Seth
6,35611128
edited Dec 5 '16 at 10:54
Seth
6,35611128
6,35611128
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
answered Dec 5 '16 at 10:00
Journeyman Geek♦Journeyman Geek
112k44217371
112k44217371
add a comment |
add a comment |
Your Ethernet adapter config suggests a possible DHCP issue. DHCP is enabled on the client, but your IPv4 address is an APIPA address, suggesting that the client was unable to receive an address from the DHCP server. That would explain why the IPv6 addresses are listed for DNS Servers. Client often receive default gateway and DNS information via DHCP scope options.
The IPv6 addresses you listed are reserved site-local addresses (RFC 3879), which is deprecated, but for some still employed in cases like this. I hesitate to compare site-local addressing directly with APIPA, as link-local addresses are a closer comparison.
I was able to dig up an interesting article on site-local addresses. It explains the relationship between site-local addresses and DNS in more depth.
https://www.howfunky.com/2015/10/ipv6-site-local-addresses-why-are-those.html
All that to say, I would start looking at DHCP.
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
add a comment |
Your Ethernet adapter config suggests a possible DHCP issue. DHCP is enabled on the client, but your IPv4 address is an APIPA address, suggesting that the client was unable to receive an address from the DHCP server. That would explain why the IPv6 addresses are listed for DNS Servers. Client often receive default gateway and DNS information via DHCP scope options.
The IPv6 addresses you listed are reserved site-local addresses (RFC 3879), which is deprecated, but for some still employed in cases like this. I hesitate to compare site-local addressing directly with APIPA, as link-local addresses are a closer comparison.
I was able to dig up an interesting article on site-local addresses. It explains the relationship between site-local addresses and DNS in more depth.
https://www.howfunky.com/2015/10/ipv6-site-local-addresses-why-are-those.html
All that to say, I would start looking at DHCP.
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
add a comment |
Your Ethernet adapter config suggests a possible DHCP issue. DHCP is enabled on the client, but your IPv4 address is an APIPA address, suggesting that the client was unable to receive an address from the DHCP server. That would explain why the IPv6 addresses are listed for DNS Servers. Client often receive default gateway and DNS information via DHCP scope options.
The IPv6 addresses you listed are reserved site-local addresses (RFC 3879), which is deprecated, but for some still employed in cases like this. I hesitate to compare site-local addressing directly with APIPA, as link-local addresses are a closer comparison.
I was able to dig up an interesting article on site-local addresses. It explains the relationship between site-local addresses and DNS in more depth.
https://www.howfunky.com/2015/10/ipv6-site-local-addresses-why-are-those.html
All that to say, I would start looking at DHCP.
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
Your Ethernet adapter config suggests a possible DHCP issue. DHCP is enabled on the client, but your IPv4 address is an APIPA address, suggesting that the client was unable to receive an address from the DHCP server. That would explain why the IPv6 addresses are listed for DNS Servers. Client often receive default gateway and DNS information via DHCP scope options.
The IPv6 addresses you listed are reserved site-local addresses (RFC 3879), which is deprecated, but for some still employed in cases like this. I hesitate to compare site-local addressing directly with APIPA, as link-local addresses are a closer comparison.
I was able to dig up an interesting article on site-local addresses. It explains the relationship between site-local addresses and DNS in more depth.
https://www.howfunky.com/2015/10/ipv6-site-local-addresses-why-are-those.html
All that to say, I would start looking at DHCP.
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
answered Jan 13 at 18:06
Jonathan McLarenJonathan McLaren
1112
1112
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
add a comment |
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
What I find even more suspect is that it uses Cloudflare as DHCP server.
– kasperd
Jan 16 at 0:13
add a comment |
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1
Why do you assume the IPv6 address of the DNS server is the problem?
– Seth
Dec 5 '16 at 9:06
@Seth because I have googled it and I found one post where someone had ipv6 under the dns servers and their internet wasn't working. also under my wifi it is ipv4 for the dns servers
– J leong
Dec 5 '16 at 9:07
1
What version of Windows are you using? Does your client have an IPv4 or IPv6 address? What do you mean your Ethernet doesn't work? You LAN internet connection? Can you reach other clients on the network?
– Seth
Dec 5 '16 at 9:11
@Seth i am unable to connect to the internet via ethernet cable. it shows those things under dns servers in the ipconfig /all. I don't know if it works over LAN. there is also no default gateway for the ethernet.
– J leong
Dec 5 '16 at 9:19
Sounds like your DHCP server isn’t working. Please provide the entire output of
ipconfig /all, preferably only for the relevant network interface.– Daniel B
Dec 5 '16 at 9:40