Re: need sd card backup on r-pi-3b

[Mark Morgan Lloyd <markMLl.debian-arm@telemetry.co.uk>]

On 23/09/17 20:00, Gene Heskett wrote:

> So my local network is working as expected.  BUT:
> root@rock64:/etc# ping -c1 yahoo.com
> PING yahoo.com (98.138.253.109) 56(84) bytes of data.
>  From 192.168.71.2 (192.168.71.2) icmp_seq=1 Destination Host Unreachable
>
> Note that the dns request did resolve.
>
> But my dns requests are probably being answered by dnsmasq in the router.
> I cannot find anything in the routers copious settings (it's DD-WRT)
> that would prevent a connection, but it refuses to pass. I've tried
> several ipv4 addresses in that 192,168.nn block. No other machines, 5
> more, on this local net are being denied network access.
>
> Ideas? I'm nearly out of hair. But its been slowly thinning for 82+ years
> too so I can't blame it on this too loudly.

I've only run Stretch briefly so far, in the context of trying to find 
out whether USB boot worked (patchy, but might have been a power issue).

I'd suggest checking using  traceroute -I  and then looking at  route -n 
 and/or  ip route ls  which should give you a bit more of an indication 
of what's going on. IME this sort of thing is usually because the router 
isn't NATting the entire 192.168.x.x range.

--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]