On 21/03/18 17:19, Kakarla Srinivas wrote:
> Please check the log and provide the solution.

>   Temporary failure resolving 'repos.rcn-ee.com'

In other words, your BeagleBone is unable to reach your nameserver, so
doesn't know who on earth 'repos.rcn-ee.com' is.  The solution is to
troubleshoot your Internet connection.

Check:
1. Physical connections, i.e. if using Ethernet, that both ends of the
Ethernet cable indicate a successfully negotiated Ethernet link.  I have
no idea looking at this post what you are using whether it be Ethernet,
USB, WiFi or avian carrier, so perhaps in future you might want to
include this information.

2. IP addresses on the BeagleBone.  Run `ip addr show` and see what
addresses are assigned.  I'm not sure what the BeagleBone's ethernet
connection is called; but assuming it is named `eth0`, try `dhclient
eth0` if you're using DHCP or `ip addr add ${CIDR} dev eth0` for static
IP (${CIDR} is your IP address and prefix length; e.g. 192.168.255.224/24).

3. Routes, if using DHCP, that should be taken care of, but double check
with `ip route show`.  If your default route is not there; try `ip route
add default via ${ROUTER_IP}`.

4. Nameserver. `cat /etc/resolv.conf` and have a look.  Maybe try
running `echo nameserver 8.8.8.8 > /etc/resolv.conf` and see if you fare
better.

Regards,
-- 
Stuart Longland (aka Redhatter, VK4MSL)

I haven't lost my mind...
  ...it's backed up on a tape somewhere.

-- 
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