Trying to add a nameserver.
On PC B, I have
Global
Protocols: LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: stub
Link 2 (enp3s0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS
DNSSEC=no/unsupported
Link 3 (wlp2s0)
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
Protocols: +DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS
DNSSEC=no/unsupported
Current DNS Server: 192.168.43.1
DNS Servers: 192.168.43.1
On PC A
Global
Protocols: LLMNR=resolve -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: stub
Link 2 (enp1s0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS
DNSSEC=no/unsupported
Link 3 (enp2s0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS
DNSSEC=no/unsupported
Link 4 (virbr0)
Current Scopes: none
Protocols: -DefaultRoute LLMNR=resolve -mDNS -DNSOverTLS
DNSSEC=no/unsupported
What should I set on this PC A?
resolvectl dns enps2s0 192.168.43.1
systemctl restart systemd-resolved
>
> > Yes the schamatics is correct.
> > I set the gateway and now it works.
> >
> > Now
> > 1) I wish to use internet from PC A.
> > I guess that I need to set a name server
> > But not possible manually
>
> Presuming that you just mean for using the internet... If internet
> sharing is working, then tell A to use the same name server that is
> working on B.
>
>
> > 2) How do I need to set for PC 3
> > From PC A
> > From PC C
> > I tried several things but none works
>
> PC 3? You're adding a third PC into this mixture?
>
> If B was your gateway, and it had an extra spare ethernet port. Any
> other approach would become a Frankenstein's monster of a network.
>
>
> --------- ------------- ----------
>
>
> I am currently horsing around with a Frankenetwork at the moment,
> somewhat similar to yours, thanks to my Fibre-to-the-house ISP becoming
> greedy and my dropping them. Likewise it's a temporary thing, though
> saving $60 to $80 a month is looking good, right now.
>
> I have a mobile phone which can act as a wireless access point, and
> various devices around my house are using it as one. I only had to
> switch on Mobile Hotspot on the phone for it to act that way. I set
> its SSID to be the same as my former network, and the WiFi devices
> around the house are happy.
>
> And I plug a desktop PC into the phone's USB port. I only had to
> switch on USB tethering on the phone, and the (ye olde CentOS) PC
> figured out what to do by itself, likewise if I do that with a Fedora
> PC, but an old Mac flatly refuses to do that (the phone is Android, and
> Apple are deliberately obstinate on not co-operating with non-Apple).
>
> Things mostly work fine, apart from being double-natted (the phone and
> the phone service provider), and that's only one PC at a time.
>
> The hard parts about doing this, are:
>
> * The phone only supports up to 10 devices going through it (and there
> were more than 10 gadgets on my former wireless LAN).
>
> * The phone service provider uses CGNAT (so I can't FTPÂ into things).
>
> * There's several non-WiFi devices, and my ye old CentOS server
> doesn't want to share the phone's internet service out its ethernet
> connection.
>
> * All the desktop devices are still ethernet cabled together, so LAN
> work still works, but connecting the phone to one of them takes over
> from my DNS server and uses the phone as the DNSÂ server sometimes
> and sometimes not. So you get either no local name resolution or no
> internet name resolution, until I fiddle with disconnecting and
> reconnecting things via desktop manager.
>
> Dunno why my server doesn't want to co-operate with internet sharing,
> I've done that kind of thing before (with dial-up modem on the serial
> port). I settled for running Squid on that box, and the other
> computers can browse the net using it as a HTTP proxy.
>
> But this kind of thing is messy and fragile (and temporary). Life's
> much easier with a proper internet service going into a router. WiFi
> and ethernet routers are quite cheap, now, probably on a par with a
> WiFi dongle. In my case, all I have to do is find a new ISP that I'm
> happy with (acceptable pricing and service levels, with a proper real
> public IP, and preferably FTTP not 5G).
>
> We wouldn't have this no-public-IP problem if everyone had got their
> act together and set up IPv6 properly. But our ISPs would rather faff
> around with *very* limited CGNAT (my router used NAT, and I could
> always FTP through that without having to do anything special). My
> former ISP had IPv6 when I first joined, then a couple of months in
> they removed it, and remotely reconfigured the supplied modem/router
> combo to disable it.
>
> --
>
> uname -rsvp
> Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
>
> Boilerplate: All unexpected mail to my mailbox is automatically deleted.
> I will only get to see the messages that are posted to the mailing list.
>
>
>
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