forum.excito.org

Hi,

Got a weird one with my B3, which is my WiFi access point.

I have a Fujitsu scansnap 500 on my WiFi network which works with my android phone over WiFi. All good except the scanner occasionally disappears.

I have debugged this as a router problem.

From the router/B3 I can always ping the scanner.

From a laptop I can always ping the scanner if using a wired connection to the B3.

If the same laptop is WiFi connected the ping to the scanner returns destination unreachable.

The laptoo can always ping the B3 successfully.

I have tried adding an ACCEPT rule for ping to the start of the forward chain in the filter table but no improvement.

I can't figure out how the B3 maps both the lan and WiFi to BR0. Might be useful knowing that.

Any help appreciated

Thanks

Some more info

All other network functions work.
SSH
Samba
Internet

Here's the weird bit

If I reboot the B3 the problem goes away but will return at some point.

Thanks

Sounds like a DNS/DHCP issue. You should probably check and monitor your dnsmasq.leases file. A possible fix could be to assign the scanner a fixed IP and network name in your DHCP configuration.

Hi Gordon,

Thanks for your thoughts on this.

I have been thinking the same and waited for the scanner's DHCP lease to expire but when it did it renewed successfully and the scanner continued to work. I have not looked at the leases file you suggest however and will do so next time I lose connection.

Last time the connect went down coincided with a log file rotation. I'm suspicious that the rotation has caused something important to crash.

Thanks again!