dhcp isn't working properly

[Sauron]

Hey,

 

Since last saturday I've been having problems with my network. Apparently the router is not at fault, as I reset it multiple times and even contacted my isp where they assured me the problem was not with the internet connection or the modem/router itself. What has been happening is that none of my desktops could connect to the internet properly, apparently the network wan "unidentified" and it had no access. Some of my wireless devices had issues too. I "solved" the problem by setting a static ip address, which appears to work fine, but I'd still like to use dhcp if at all possible. I'm running windows 10 on both machines that were having this problem, does anyone know if there are dhcp issues related to 10?

 

Thanks for any help.

[MrStraightface]

what does ipconfig /all say when DHCP is on?

[Sauron]

what does ipconfig /all say when DHCP is on?

 

Windows IP Configuration

 

   Host Name . . . . . . . . . . . . : Skynet

   Primary Dns Suffix  . . . . . . . :

   Node Type . . . . . . . . . . . . : Hybrid

   IP Routing Enabled. . . . . . . . : No

   WINS Proxy Enabled. . . . . . . . : No

   DNS Suffix Search List. . . . . . : localdomain

 

Ethernet adapter Ethernet:

 

   Connection-specific DNS Suffix  . : localdomain

   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller

   Physical Address. . . . . . . . . : F4-6D-04-92-93-48

   DHCP Enabled. . . . . . . . . . . : Yes

   Autoconfiguration Enabled . . . . : Yes

   Link-local IPv6 Address . . . . . : fe80::41d3:7575:1b95:cdb8%2(Preferred)

   IPv4 Address. . . . . . . . . . . : 192.168.220.135(Preferred)

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Lease Obtained. . . . . . . . . . : Monday, August 3, 2015 2:23:36 PM

   Lease Expires . . . . . . . . . . : Monday, August 3, 2015 2:53:35 PM

   Default Gateway . . . . . . . . . :

   DHCP Server . . . . . . . . . . . : 192.168.220.254

   DHCPv6 IAID . . . . . . . . . . . : 267676932

   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-AA-49-0A-F4-6D-04-92-93-48

   DNS Servers . . . . . . . . . . . : 192.168.220.1

   NetBIOS over Tcpip. . . . . . . . : Enabled

 

Ethernet adapter VMware Network Adapter VMnet0:

 

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet0

   Physical Address. . . . . . . . . : 00-50-56-C0-00-00

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

   Link-local IPv6 Address . . . . . : fe80::3126:b23f:1fb5:8941%10(Preferred)

   IPv4 Address. . . . . . . . . . . : 192.168.220.1(Preferred)

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . . :

   DHCPv6 IAID . . . . . . . . . . . : 50352214

   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-AA-49-0A-F4-6D-04-92-93-48

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1

                                       fec0:0:0:ffff::2%1

                                       fec0:0:0:ffff::3%1

   NetBIOS over Tcpip. . . . . . . . : Enabled

 

Ethernet adapter VMware Network Adapter VMnet1:

 

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet1

   Physical Address. . . . . . . . . : 00-50-56-C0-00-01

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

   Link-local IPv6 Address . . . . . : fe80::7178:b7a2:5dac:3653%8(Preferred)

   IPv4 Address. . . . . . . . . . . : 192.168.222.1(Preferred)

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . . :

   DHCPv6 IAID . . . . . . . . . . . : 83906646

   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-AA-49-0A-F4-6D-04-92-93-48

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1

                                       fec0:0:0:ffff::2%1

                                       fec0:0:0:ffff::3%1

   NetBIOS over Tcpip. . . . . . . . : Enabled

 

Ethernet adapter VMware Network Adapter VMnet8:

 

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet8

   Physical Address. . . . . . . . . : 00-50-56-C0-00-08

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

   Link-local IPv6 Address . . . . . : fe80::f9c0:e528:df5d:b7a4%7(Preferred)

   IPv4 Address. . . . . . . . . . . : 192.168.209.1(Preferred)

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Default Gateway . . . . . . . . . :

   DHCPv6 IAID . . . . . . . . . . . : 201347158

   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-AA-49-0A-F4-6D-04-92-93-48

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1

                                       fec0:0:0:ffff::2%1

                                       fec0:0:0:ffff::3%1

   NetBIOS over Tcpip. . . . . . . . : Enabled

 

Tunnel adapter isatap.{C9DCB9C1-7F6A-4818-A136-B90991051908}:

 

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Microsoft ISATAP Adapter

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

 

Tunnel adapter isatap.{6354B49B-764D-4E4A-AB80-763A1EDA198F}:

 

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

 

Tunnel adapter Teredo Tunneling Pseudo-Interface:

 

   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.{7B22C642-6DBB-491D-9CA9-06CE2126540C}:

 

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

 

Tunnel adapter isatap.localdomain:

 

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . : localdomain

   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #5

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

 

You can ignore the vmware adapters, I've disabled them before and nothing changed.

[Altecice]

192.168.220.135... now that's a weird default subnet for a SOHO router. Did you set it like this?

Have you tried doing a reset on the router (it will reset all settings so make sure to setup SSID/PW again).

[Sauron]

192.168.220.135... now that's a weird default subnet for a SOHO router. Did you set it like this?

Have you tried doing a reset on the router (it will reset all settings so make sure to setup SSID/PW again).

 

I sure as hell did not set that, and yeah, I noticed it too, no idea how to change it though. I even used to have my main rig's ip address reserved to 192.168.1.6. I have reset the router multiple times, didn't seem to do much unfortunately. In fact, I can't connect to the configuration page of the modem/router either, even with a static ip and the internet connection working.

[spbr]

Just out of interest, how many devices are on your network?

[Altecice]

I sure as hell did not set that, and yeah, I noticed it too, no idea how to change it though. I even used to have my main rig's ip address reserved to 192.168.1.6. I have reset the router multiple times, didn't seem to do much unfortunately. In fact, I can't connect to the configuration page of the modem/router either, even with a static ip and the internet connection working.

 

A full factory reset should change that back to the default 192.168.0.0/24 or 1.0... your WIFI network should also default back to original names.

[Sauron]

Just out of interest, how many devices are on your network?

 

The count is variable depending on what is on and what isn't (almost never all at the same time). There are 2 desktops that are always connected (when they are on), one that gets connected sporadically, a raspberry pi 2 (through wifi), 3 phones, 4 tablets, a blu-ray player and a tv. Plus various virtual machines, I usually set the to have their own ip.

[Sauron]

A full factory reset should change that back to the default 192.168.0.0/24 or 1.0... your WIFI network should also default back to original names.

 

unfortunately I can't access the configuration page. There is a "reset" button that you can press with a pencil, but it doesn't seem to set it to factory defaults.

[Altecice]

unfortunately I can't access the configuration page. There is a "reset" button that you can press with a pencil, but it doesn't seem to set it to factory defaults.

 

hold it for 60 seconds. 

[Sauron]

hold it for 60 seconds. 

 

going to try, by the way my arch linux vm doesn't have any problems using dhcpcd.

[Sauron]

hold it for 60 seconds. 

 

Even after 60 seconds it doesn't seem to react. Also, the wifi adapter seems to manage to get a dynamic address, whereas the ethernet adapter can't.

[Sauron]

So apparently by setting a static dns server (the modem's ip address) and asking for a dynamic ip address it works. I even managed to connect to the configuration page this time.