Re: ping, ssh not using dns?

Nick Frost wrote:
> On Jun 7, 2009, at 6:46 AM, Aaron wrote:
>
>> I'm using netmanager over wireless on eeebuntu at home.
>> the 'host' command seems to do host name lookups, but
>> other commands, like ping and ssh do not.
>>
>> why might this occur?
>>
>> flea:~> cat /etc/resolv.conf
>> # Generated by NetworkManager
>> domain localnet
>> search localnet
>> nameserver 192.168.1.1
>> flea:~> host coot
>> coot has address 192.168.1.1
>> flea:~> ping coot
>> ping: unknown host coot
>
> What is the output of;
>
> grep -i hosts /etc/nsswitch.conf ?
hosts:          dns files mdns4_minimal [NOTFOUND=return] mdns4

>
> e.g.
>
> grep dns /etc/nsswitch.conf
> #    dns            Use DNS (Domain Name Service)
> #hosts:     db files nisplus nis dns
> hosts:      files dns
>
> Also, do you have an entry for coot in your local /etc/hosts file?
>
no.  I was hoping that since it knows that coot is the DNS server
(running dnsmasq) coot could resolve it's own name

> 192.168.1.1 coot.boim.com coot
>
> and what is the local domain name set to?  (dnsdomainname)
>
localnet


note:

root@flea:~/.ssh# ping coot.localnet
ping: unknown host coot.localnet
root@flea:~/.ssh# host coot.localnet
Host coot.localnet not found: 3(NXDOMAIN)
root@flea:~/.ssh# host coot.localnet 192.168.1.1
Using domain server:
Name: 192.168.1.1
Address: 192.168.1.1#53
Aliases:

Host coot.localnet not found: 3(NXDOMAIN)

>
> It may be that your local machine thinks it has a different domain 
> name than that which your local nameserver is returning for the query 
> and SSH and/or ping are finding a mismatch with the dnsdomain name and 
> think coot belongs to a different network.
coot has no response to dnsdomainname.

resolv.conf has only one line...  nameserver 127.0.0.1

here are some curious lines in dnsmasq.conf:

    # Never forward plain names (without a dot or domain part)
    domain-needed
    # Never forward addresses in the non-routed address spaces.
    #bogus-priv

    # Add other name servers here, with domain specs if they are for
    # non-public domains.
    #server=/localnet/192.168.0.1
    #server=/localnet/192.168.1.2
    #server=/localnet/192.168.1.1
    server=/localnet/127.0.0.1
    server=/1.168.192.in-addr.arpa/127.0.0.1
    server=/0.0.10.in-addr.arpa/127.0.0.1
    server=216.184.2.2
    server=198.59.115.2

    # Add local-only domains here, queries in these domains are answered
    # from /etc/hosts or DHCP only.
    local=/localnet/

    domain=localnet


thx,

           aaron



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