Routing problems with fixed IP on WAN

[warnerk]

I want to setup a firewall with a fixed IP on WAN as there is no DHCP on it. It is a 8 address subnet.
I have 2 problems.
If I test the firewall in a test environment  with WAN set to DHCP I can ping 8.8.8.8 but cannot access www.google.nl from a client. So DNS does not work. I have set the DNS servers in the system general setup page to 8.8.8.8 62.58.62.132 and 62.58.94.130.
When I change WAN to fixed IP I get the message "no route to 8.8.8.8" . I have set the gateway on the WAN page to the gateway in the testnetwork.
What else must I do to get things going?

edit1: I found

One possibility:
If the router you're behind is indicating any kind of IPv6 capability pfSense will try to use it. It probably doesn't actually have that capability so you end up with nothing. Try this:
https://doc.pfsense.org/index.php/Controlling_IPv6_or_IPv4_Preference

Steve

and that helped for the dns problem.

edit2 for more info:
When I set WAN to DHCP I get in the Status->Gateways 192.168.10.1 "On-line"
When I set WAN to fixedIPv4 and I have put in the System->Gateways 192.168.10.1 at WAN I get in Status->Gateways 192.168.10.1 "Off-line".
I did uncheck the box "Block private networks" in Interfaces->Wan.
On a client I did route print and the output is the same for fixed and dhcp:

C:\Documents and Settings\wk>route print

Interfacelijst
0x1 …........................ MS TCP Loopback interface
0x2 ...08 00 27 01 04 d3 ...... AMD PCNET Family PCI Ethernet-adapter - Pakketpl
anner-minipoort

===========================================================================
Actieve routes:
Netwerkadres              Netmask          Gateway      Interface  Metric
          0.0.0.0          0.0.0.0    192.168.20.1  192.168.20.132      20
        127.0.0.0        255.0.0.0        127.0.0.1      127.0.0.1      1
    192.168.20.0    255.255.255.0  192.168.20.132  192.168.20.132      20
  192.168.20.132  255.255.255.255        127.0.0.1      127.0.0.1      20
  192.168.20.255  255.255.255.255  192.168.20.132  192.168.20.132      20
        224.0.0.0        240.0.0.0  192.168.20.132  192.168.20.132      20
  255.255.255.255  255.255.255.255  192.168.20.132  192.168.20.132      1
Standaard-gateway:      192.168.20.1

Permanente routes:
  Geen

But a tracert on the client stops in fixedIP after the firewall and continues in DHCP mode:

C:\Documents and Settings\wk>tracert 8.8.8.8

Bezig met het traceren van de route naar 8.8.8.8 via maximaal 30 hops

1    1 ms  <1 ms  <1 ms  gastfirewall.gasten [192.168.20.1]
  2  gastfirewall.gasten [192.168.20.1]  rapporten: De doelhost is niet bereikba
ar.

De trace is voltooid.
–--------------------------------------------------------------------
C:\Documents and Settings\wk>tracert 8.8.8.8

Bezig met het traceren van de route naar 8.8.8.8 via maximaal 30 hops

1    2 ms    2 ms    1 ms  gastfirewall.gasten [192.168.20.1]
  2    2 ms    1 ms    1 ms  obgpoort.oudburgerengasthuis.local [192.168.10.1
]
  3    1 ms    2 ms    1 ms  87.213.156.9
  4    24 ms    24 ms    24 ms  217.16.43.233
  5    36 ms    22 ms    23 ms  217.16.43.33
  6    27 ms    47 ms    25 ms  212.53.31.82
  7    26 ms    27 ms    26 ms  195.69.145.100
  8    27 ms    27 ms    25 ms  209.85.254.90
  9    27 ms    27 ms    26 ms  209.85.253.249
10    31 ms    28 ms    30 ms  209.85.255.73
11    27 ms    30 ms    29 ms  216.239.49.28
12    *        *    ^C

Why is there no route?