[sane-devel] network scanning quit working

[Ralph Little]

Hi,

On 2020-12-03 4:48 p.m., Perry Hutchison wrote:
> This has to be something utterly trivial :(
>
> I have a Canon copier/printer/scanner on the same (wired) Ethernet
> as an Ubuntu Linux system.  In the past this combination has "just
> worked" -- I didn't have to configure anything -- but today neither
> Simple Scan nor "scanimage -L" can find the scanner.
>
> The one change I know of is that, since the last time it was working,
> the scanner reported (via the front-panel LCD) that its IP address
> had changed; and the new IP address is a bit strange:  169.254.53.67,
> (previously 192.168.0.10, the local network being 192.168.0/24).
> Since it was found automatically before, and it does respond to ping
> at its new address, I would expect it to be found again despite the
> changed IP address.
>
Sounds to me like the printer is on a different subnet, so it would be
unlikely to be found automatically.

Do you know why the printer has acquired an IP address that is not on
the same subnet as your Linux machine?
If the scanner setup for DHCP?

Cheers,
Ralph