> These machines are portable. [0]
On Sun, Jun 27, 2021 at 01:26:24AM -0500, Carl Karsten wrote: > On Sun, Jun 27, 2021 at 12:03 AM Dominik <dl...@dl6er.de> wrote: > > > Hey Carl, > > > > On Sat, 2021-06-26 at 19:16 -0500, Carl Karsten wrote: > > > I'm looking for advice on haveing some boxes to have both dynamic and > > > static IPs. > > > > Why use a static IP at all? We have often enough seen people use static > > addresses for the wrong reasons. > > > > Consider using only DHCP and > > > > (a) use a hostname to access the device. In the end, memorizing some- > > service.lan is more reliable than 192.168.1.149. You may think > > differently, but let's see what you say after not having logged into > > the box for half a year - do you still know the address without looking > > it up? However, you may still recall a good hostname. > > > > (b) use a deterministic DHCP server like dnsmasq. It always tries to > > assign the same IP addresses to the same devices (instead of numbering > > them sequentially based on their appearance like cheap routers often > > do). > > > > Using (a), (b) or (a)+(b) doesn't require you to have a static IP at > > all. > > > > These machines are portable. they will likely start out on a lan where I > control the dhcp server; the os apps and config are setup, then they are > moved to another room. They live there for a few days to a week, and then > are put back in storage, with a few being left out for R&D to experiment > with. > > There isn't always a dhcp server on the network. There is the true problem. And that problem implies manual assignment of IPv4 addresses plus setting router and most likely DNS (or even worse: At N servers updating N entries in /etc/hosts) > Sometimes there isn't even a network with the exception of a single > run of cat 5 between 2 machines. > > This is what is going on: > https://debconf-video-team.pages.debian.net/docs/room_setup.html#room-setup > > Sometimes there isn't a link to "DHCP – Gigabit feed out" (thus there is no > live stream, just recording to local disk) > > This is what I want the static IP for: > The "Opsis PC" has a systemd script that connects to "Voctomix PC" > The script uses a hostname, the hostname is set in /etc/hosts > > If there is a network with dhcp, then it will be nice to get the gateway > and be able to ssh into machines. I recommend to add an OpenWRT device or another portable DHCP server + DNServer to the equipment. > > Best, > > Dominik > > > > Carl K Groeten Geert Stappers [0] Acknowlegde on "Allow me my ignorance" Please do go beyond that and reply below previous text. Do it for your future self that will be visiting the mailinglist archive. -- Silence is hard to parse _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
