> On Jun 28, 2021, at 7:42 AM, Carl Karsten <c...@nextdayvideo.com> wrote: > > > > On Sun, Jun 27, 2021 at 12:17 PM Andrew Miskell <andrewmisk...@mac.com > <mailto:andrewmisk...@mac.com>> wrote: > > >> On Jun 27, 2021, at 12:02, Carl Karsten <c...@nextdayvideo.com >> <mailto:c...@nextdayvideo.com>> wrote: >> >> >> >> >> On Sun, Jun 27, 2021 at 10:49 AM Andrew Miskell <andrewmisk...@mac.com >> <mailto:andrewmisk...@mac.com>> wrote: >> >> >>> On Jun 27, 2021, at 09:30, Carl Karsten <c...@nextdayvideo.com >>> <mailto:c...@nextdayvideo.com>> wrote: >>> >>> >>> >>> >>> On Sun, Jun 27, 2021 at 7:56 AM john doe <johndoe65...@mail.com >>> <mailto: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 >>> > <mailto: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 >>> <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk> >>> https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss >>> <https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss> >>> >>> >>> -- >>> Carl K >>> _______________________________________________ >>> Dnsmasq-discuss mailing list >>> Dnsmasq-discuss@lists.thekelleys.org.uk >>> <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk> >>> https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss >>> <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
If you want both DHCP and Static IPs on the same interface, then maybe using what’s described here (https://askubuntu.com/questions/1031278/does-netplan-support-dhcp-and-static-addresses-on-one-interface <https://askubuntu.com/questions/1031278/does-netplan-support-dhcp-and-static-addresses-on-one-interface>) under NetPlan would be helpful for you. I don’t know if NetPlan is available under Debian, but it should work on your Ubuntu instance at least.
_______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
