On Fri 13 Dec 2019 at 19:33:51 (-0500), Jape Person wrote: > Hi folks. Did I miss something?
Perhaps a couple of references: https://features.icann.org/addressing-new-gtld-program-applications-corp-home-and-mail which points out that any of .home, .mail and .corp are ideal for the domain name of a home LAN, and RFC 6762 on Multicast DNS which explains why .local is not a good choice. > I've had 3 Sid/testing systems running on the same LAN behind the same > router for just shy of 3 years. Their static IP addresses have always > been issued by the DHCP server on the router. Everything has been > copacetic among the systems, with local and outside name resolution > working with no issue. > > A little over a week ago the systems stopped being able to access each > other by name. No changes were made in the settings or firmware of the > router or of the local network settings on the systems. > > I discovered that all of the hostnames had changed from xxxxxx.local > to xxxxxx. I've tried to determine the cause of this alteration in the > hostnames on the LAN. > > Everything is working fine now that I've stopped trying to call the > systems by the old xxxxxx.local names. > > Could this change be due to recent upgrades in software? (I upgrade > every day.) I've reviewed the recent upgrades listed in > /var/log/apt/history.log. I would have thought any deliberate change > of this behavior would have been flagged by listchanges, but I can't > find it. > > I'm just a home user / hobbyist, but this change occurring without any > deliberate administrative action on my part makes the hairs stand up > on my neck -- just a little bit. > > Advice or consolation would be welcomed. I tried .local quite a long while ago but it didn't work too well. I don't know where the problem lay, and I got along with no domain name for a longish period, but changed to .corp after I read the first reference above. It stopped exim4 complaining too. But is it possible you've started using avahi/bonjour when previously you didn't? Or has the router upgraded itself and now knows not to issue names like that? Perhaps others have more/better ideas. Cheers, David.