Furthermore, DNS has nothing to do with your problem. You are using numeric addresses. DNS is about turning names into numeric addresses. If you start with numeric addresses, you aren't using DNS.
As I mentioned, probably several times before, if you are on the same network (in your case 192.168.55.x/24) then you don't need to specify a route to get to other addresses on that same network. I don't know why you are getting the error message, primarily because you don't supply enough information. If you are confused about an error message, probably the first thing to do is to google the exact text of the message. Often this will provide clues. If you want specific help, send us the *full output* of: ip addr and ip route from your laptop and we can go from there. The combinatorial ways of screwing things up is too large to guess. Information is required. On Wed, Dec 18, 2019 at 1:19 PM Russell Senior <[email protected]> wrote: > The loopback interface has nothing to do with your problem. 127.0.0.1/8 > on lo is normal. > > You should configure your laptop to use DHCP (since you don't seem to > understand networking enough to use manual configuration to get it > working), plug it in, automatically get a lease, and then connect your > browser to 192.168.55.4. Boom, done. > > On Wed, Dec 18, 2019 at 12:25 PM Rich Shepard <[email protected]> > wrote: > >> Attempting to tweak the configuration of the ER-X (port eth1) using the >> Dell >> 2100 (interface eth0) I'm encountering loopback address and routing issues >> that I've not fixed using ip. >> >> When the laptop boots 'ip link show' has only 127.0.0.0/8 (the loopback >> interface) when I expected it to have 127.0.0.1/24. >> >> Running 'ip link set eth0 up' brought up the eth0 interface. Then >> 'ip route 192.168.55.3 via 192.168.55.4 dev eth0' returns >> RTNETLINK answers: network is unreachable >> (When I change the interface address to 192.168.55.3/24 RTNETLINK answers >> 'Invalid argument'.) >> >> My understanding is that this is a DNS lookup issue. The laptop's >> /etc/resolv.conf contains: >> >> nameserver 8.8.8.8 >> nameserver 127.0.0.1 >> nameserver 192.168.55.1 >> >> Because the laptop is not connected to the LAN, only to the ER-X, I >> expected >> the loopback address would work, but ip is not seeing that address for >> some >> reason I've not before encountered. >> >> # ip r show >> # 127.0.0.0/8 dev lo >> >> What I want to do is change adminname and password, adjust the DHCP range, >> and upgrade the OS to 2.0.8 yet I have apparently hit the edge of my >> networking knowledge in trying to both fix the lo IP address and establish >> communications with the ER-X so I can make the changes. >> >> Looking forward to expanding my network knowledge. >> >> Regards, >> >> Rich >> _______________________________________________ >> PLUG mailing list >> [email protected] >> http://lists.pdxlinux.org/mailman/listinfo/plug >> > _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
