On Sun, Jun 27, 2021 at 12:17 PM Andrew Miskell <andrewmisk...@mac.com> wrote:
> > > On Jun 27, 2021, at 12:02, Carl Karsten <c...@nextdayvideo.com> wrote: > > > > > On Sun, Jun 27, 2021 at 10:49 AM Andrew Miskell <andrewmisk...@mac.com> > wrote: > >> >> >> On Jun 27, 2021, at 09:30, Carl Karsten <c...@nextdayvideo.com> wrote: >> >> >> >> >> On Sun, Jun 27, 2021 at 7:56 AM john doe <johndoe65...@mail.com> wrote: >> >>> On 6/27/2021 9:17 AM, Carl Karsten wrote: >>> > On Sun, Jun 27, 2021 at 2:10 AM john doe <johndoe65...@mail.com> >>> wrote: >>> > >>> >> On 6/27/2021 7:03 AM, Dominik 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. >>> >>> >>> >> >>> >> As I understand it, the OP wants to use DHCP static leases. >>> >> >>> > >>> > No. >>> > >>> > I need this for when move put a box on someone else's network. >>> > So I don't have any control over the dhcp server. >>> > >>> >>> Then set an fix IP on dhcp client (dhclient ...) and remove it when you >>> don't need it. >>> >>> Basically, you set the dhcp client to have a static address or let the >>> client get a lease from a dhcp server. >>> >> >> I'm trying to reduce the amount of work I need to do when I show up and >> discover there is no dhcp server. >> >> Example locations: university, coffee shop, convention center, office >> meeting room. In all cases I am a guest for a few days. >> >> >> >>> >>> Why do you need dnsmasq into the mix? >>> >> >> I don't - I am just working on client config. >> >> >> >>> >>> -- >>> John Doe >>> >>> _______________________________________________ >>> Dnsmasq-discuss mailing list >>> Dnsmasq-discuss@lists.thekelleys.org.uk >>> https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss >>> >> >> >> -- >> Carl K >> _______________________________________________ >> Dnsmasq-discuss mailing list >> Dnsmasq-discuss@lists.thekelleys.org.uk >> https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss >> >> >> A couple things. It might help to state what the client device is running >> (Windows, Linux and what distribution/version). >> >> > Opsis PC: Ubuntu 20.04.2 LTS > Voctomix: Debian GNU/Linux 11 > > > >> dnsmasq is a DNS/DHCP server not a client, so I’m unsure what the role of >> dnsmasq would be here. >> >> > This is a bit OT (Off Topic) as in it is not a dnsmasq server question. > I am asking about client config. > to a group qualified to know about such things. > if there is a better place to ask such questions, let me know. > > > >> Most of the places you listed would already have a DHCP server available >> to hand out IP addresses (and associated network information) on its own. >> Otherwise, there’s no easy way to connect to the internet without knowing >> all that particular networks details (e.g. gateway address, subnet mask, >> etc, etc) which defeats the point of providing network access in a number >> of the locations you listed. >> > > If I could always plug a wire into a jack and get to a dhcp server, I > would not have a problem. > I do not want to route 400mbs video traffic though the coffee shop wifi. > Which isn't a problem as my devices don't have wifi. So yes the coffee > shop does have a dhcp server, I may not want to use it. > > If I do not have access to the venue network, then my networking needs are > just my 2 devices. This is the case I am trying to provide for, without > having to edit > a config file. the Opsis PC is often headless, so editing is done via > ssh from the voctomix pc, which is hard if the 2 don't have networking > setup. > > -- > Carl K > > > If you are using NetworkManager for configuring your interfaces on those > linux machines, you can have two profiles bound to the same interface with > the dhcp profile having a higher priority over the static profile. So if > DHCP fails, the static profile takes over. > > That sounds like I won't have both static and dhcp IPs at the same time? > Ubuntu switched to NetPlan sometime back and I’m not sure if it has the > same options, you’d have the check netplan’s documentation. > I seem to remember working this out for NetPlan and being happy with how simple the .conf was. That was about 2 years ago and I'm not sure if it worked. -- Carl K
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