Re: Can't find the DNS Servers

[Gary Roach <gary719_list1@verizon.net>]

On 09/27/2017 09:31 AM, Reco wrote:
> On Wed, Sep 27, 2017 at 10:16:20PM +1300, Richard Hector wrote:
> > On 26/09/17 19:50, Reco wrote:
> > > Please post these things from the problematic PC:
> > >
> > > ip a l
> > >
> > > ip ro l
> >
> > Can I make a request? When giving example commands, can you give them in
> > full, rather than abbreviated?
>
> Sure,
>
> ip address list
>
> ip route list
>
>
> > I believe 'a' and 'ro' are 'address' and 'route' respectively,
>
> Yep.
>
> > but 'l'
> > is a bit harder to find - not in the result of "ip address help",
> > anyway. 'list' perhaps? Which I think is the default anyway?
>
> It's 'list' indeed. 'ip a l' is a personal habit.
>
>
> > I believe anyone who knows the short versions will know the long ones,
> > and those who don't won't have to go digging up the manpages to
> > understand what's going on :-)
>
> I've requested these commands as I suspect that current IPv4 routing of
> that host prevents it to talk to configured DNSes.
>
> Of course, it might as well be:
>
> 1) Misconfigured 'nat' netfilter table (libvirt can do some strange
> things in this regard for instance).
>
> 2) Misconfigured 'filter' netfilter table (iptables are teh hard
> sometimes).
>
> 3) Misconfigured 'mangle' netfilter table (forced UDP checksumming for
> no good reason).
>
> 4) Misconfigured IPv6.
>
> 5) All those martian green men that wish evil to us all.
>
> But in cases like this I like to search for simple explanation first,
> and proceed to complex ones after.
>
>
> PS I agree that iproute's manpages have a great improvement potential.
> Speaking lightly ☺.
>
> Reco
This is the second time I've tried to send this. The first one just 
disappeared to the bit bucket I assume. So lets try again.
Sorry about the delay in replying to your request. Attached is the 
information you requested. I could not find nameservers 8.8.8.8 and 
8.8.4.4 listed anywhere. This is probably the root of my problem. I 
tried every thing I could think of but couldn't get them to stick in 
resolv.conf.

Gary R.

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).


## The loopback network interface
auto lo
iface lo inet loopback

##The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp


##The bridge network interface to qemu virtual machine
#auto br1
iface br1 inet dhcp
   bridge_ports br1
   bridge_stp off
   bridge_fd 0.0

dns-nameserver 8.8.8.8
dns-nameserver 8.8.4.4

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).


## The loopback network interface
auto lo
iface lo inet loopback

##The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp


##The bridge network interface to qemu virtual machine
#auto br1
iface br1 inet dhcp
   bridge_ports br1
   bridge_stp off
   bridge_fd 0.0

dns-nameserver 8.8.8.8
dns-nameserver 8.8.4.4

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 4c:cc:6a:87:fb:5d brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.10/24 brd 192.168.1.255 scope global dynamic enp4s0
       valid_lft 63501sec preferred_lft 63501sec
    inet6 fe80::4ecc:6aff:fe87:fb5d/64 scope link 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:d1:d9:de brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:d1:d9:de brd ff:ff:ff:ff:ff:ff

default via 192.168.1.1 dev enp4s0 proto static metric 100 
192.168.1.0/24 dev enp4s0 proto kernel scope link src 192.168.1.10 metric 100 
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown 

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 192.168.1.1
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