Internal DNS not working, setting DNS manually on host works. [SOLVED]

[agkbill]

internal DNS not working, setting DNS manually on host works.

Hi,

I am rather new to networking but will do my best to describe my problem.

I have a HW firewall running pfsense 2.4.2-RELEASE-p1. Wan is connected direct internet, and LAN to a switch distributing to 15 hosts on my home network. All hosts are effected.

The problem is that some addresses cant be resolved. For example www.google.se

If I with original settings try to ping google.se its not working.

C:\Users\christer>ping www.google.se

Pinging www.google.se [172.217.21.131] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 172.217.21.131:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\christer>nslookup www.google.se
Server:  pfSense.localdomain
Address:  192.168.1.1

Non-authoritative answer:
Name:    www.google.se
Addresses:  2a00:1450:400f:809::2003
          172.217.21.131

C:\Users\christer>

If I in pfsense in System / General Setup set DNS Servers to 8.8.8.8, keep Gateway to none:

Still not working:

C:\Users\christer>ping www.google.se

Pinging www.google.se [172.217.21.131] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 172.217.21.131:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\christer>nslookup www.google.se
Server:  pfSense.localdomain
Address:  192.168.1.1

Non-authoritative answer:
Name:    www.google.se
Addresses:  2a00:1450:400f:809::2003
          172.217.21.131

C:\Users\christer>

But if I manually set DNS to 8.8.8.8 on my host, then it works.

C:\Users\christer>ping www.google.se

Pinging www.google.se [172.217.22.163] with 32 bytes of data:
Reply from 172.217.22.163: bytes=32 time=4ms TTL=55
Reply from 172.217.22.163: bytes=32 time=4ms TTL=55
Reply from 172.217.22.163: bytes=32 time=5ms TTL=55
Reply from 172.217.22.163: bytes=32 time=4ms TTL=55

Ping statistics for 172.217.22.163:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 4ms, Maximum = 5ms, Average = 4ms

C:\Users\christer>nslookup www.google.se
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
Name:    www.google.se
Addresses:  2a00:1450:400f:808::2003
          172.217.20.35

C:\Users\christer>

But if I understand right it should not be necessary to set DNS manually, the host should get it automatically from my pfsense box over dhcp.

Any suggestion on how I could troubleshoot this or ideas what could cause this problem are most appreciated!

Best regards,
Christer Eriksson

[SOLVED]  Did a whole new installation of pfsense on my APU Alix box. Then just default setting and all works OK. No idea what caused previous installation to miss behave so badly.