ARP Table broken, No hostnames for LAN

Tikimotel

I've recently updated to the latest RC3 builds. (running : 2.0-RC3 (amd64) built on Fri Jun 24 09:54:09 EDT 2011)
Since that time the page : "Diagnostics"->"ARP table" no longer shows my LAN hostnames.

I believe it's caused by the use of "host -W 1" to determine the hostname for the IP addresses.
As you can see in the attachment it works fine for my WAN.
It was implemented to fix a long DNS server time-out issue…
(If the DNS-server is faulty it won't be noticed in both occasions (before the fix and after) due to the to the added "-W 1"...)


host -W 1 84.xxx.xxx.xxx
xxx.xxx.xxx.84.in-addr.arpa domain name pointer xxxxxxxxxxxxxx.dynamic.ziggo.nl.

It works OK for WAN IP numbers.

Now we enter a local IP:


host -W 1 192.168.0.1
Host 1.0.168.192.in-addr.arpa. not found: 3(NXDOMAIN)

It won't work.

Entering with the use of localhost as DNS results in a bit more complex output of the "host" command.
If the DNS is faulty, taking too long to respond, the "-W 1" will limit the time "host" waits for an answer.


host -W 1 84.xxx.xxx.xxx localhost
Using domain server:
Name: localhost
Address: 127.0.0.1#53
Aliases:

xxx.xxx.xxx.84.in-addr.arpa domain name pointer xxxxxxxxxxxxxx.dynamic.ziggo.nl.


host -W 1 192.168.0.1 localhost
Using domain server:
Name: localhost
Address: 127.0.0.1#53
Aliases:

1.0.168.192.in-addr.arpa domain name pointer pfsense.home.


host -W 1 84.106.42.187 verybaddnsserver
;; connection timed out; no servers could be reached

Hope this helps making ARP table work in all conditions? (LAN/WAN and long DNS time-outs)

Snap1.png_thumb

pdf

I checked this out and the host names for my systems were blank too.

I went and checked my DNS entries (System -> General Setup) and found that I had the wrong IP address for the DNS server handling my local systems. :-[

Changed the IP address to point to a working DNS server, and lo, the ARP table had hostnames! :)

HTH.

Peter

Tikimotel

Yes, I've got your method working.
You also have to turn off "Allow DNS server list to be overridden by DHCP/PPP on WAN" in order for it to work.