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#1 2025-04-06 05:39:29

Saphira
Member
Registered: 2022-11-16
Posts: 11

[SOLVED] No access to ipv4 addresses

Hello,

I have a Vodafone station.
A TP-Link 4G router without a sim card is connected to it.
When I am connected to the TP-Link with my smartphone, I can access ipv4 (e.g. reddit.com) addresses with my smartphone.

But not with my notebook (Arch Linux).
However, if I am connected to the Vodafone station with this, this is not a problem.

I can connect to ipv6 (e.g. archlinux.org) when I am connected with the TP-Link.

I use the NetworkManager to connect to the WiFi.

Unfortunately, I am not at all familiar with networks.

Can someone please help me?

Last edited by Saphira (2025-04-06 19:57:42)

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#2 2025-04-06 08:24:01

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,389

Re: [SOLVED] No access to ipv4 addresses

Please post the outputs of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
ip a
ip r

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#3 2025-04-06 08:59:18

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

% find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
bluetooth.service                        | bluetooth.target.wants
cups.path                                | multi-user.target.wants
cups.service                             | multi-user.target.wants
cups.service                             | printer.target.wants
cups.socket                              | sockets.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.network1.service    | system
dbus-org.freedesktop.nm-dispatcher.service | system
dbus-org.freedesktop.resolve1.service    | system
dbus-org.freedesktop.timesync1.service   | system
dhcpcd.service                           | multi-user.target.wants
gcr-ssh-agent.socket                     | sockets.target.wants
getty@tty1.service                       | getty.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pcscd.socket                             | sockets.target.wants
pipewire.socket                          | sockets.target.wants
pulseaudio.socket                        | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
systemd-networkd.service                 | multi-user.target.wants
systemd-networkd.socket                  | sockets.target.wants
systemd-networkd-wait-online.service     | network-online.target.wants
systemd-network-generator.service        | sysinit.target.wants
systemd-resolved.service                 | sysinit.target.wants
systemd-timesyncd.service                | sysinit.target.wants
tor.service                              | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants
% ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
    altname XXXXXXXXXXXXXXXXXXXXXXXXXX
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
    altname XXXXXXXXXXXXXXXXXXXXXXXX
    inet 192.168.1.105/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp4s0
       valid_lft 85999sec preferred_lft 85999sec
    inet6 XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX/64 scope global dynamic noprefixroute 
       valid_lft 297sec preferred_lft 117sec
    inet6 XXXX:XXXX:XXXX:XXXX:1f52:6826:7252:ae86/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 297sec preferred_lft 117sec
    inet6 fe80::43e8:87ab:efed:d523/64 scope link 
       valid_lft forever preferred_lft forever
    inet6 fe80::1205:fe54:3e31:2619/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
default via 192.168.1.1 dev wlp4s0 proto dhcp src 192.168.1.105 metric 600 
default via 192.168.1.1 dev wlp4s0 proto dhcp src 192.168.1.105 metric 3003 
192.168.1.0/24 dev wlp4s0 proto kernel scope link src 192.168.1.105 metric 600 
192.168.1.0/24 dev wlp4s0 proto dhcp scope link src 192.168.1.105 metric 3003

I removed the ipv6 and the MAC adresses
I hope thats okay.

Last edited by Saphira (2025-04-06 09:02:44)

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#4 2025-04-06 13:54:12

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,389

Re: [SOLVED] No access to ipv4 addresses

You actually have an IPv4 lease however:
* disable dhcpcd.service
* disable everything systemd-networkd* in that list
* replace pulseaudio w/ pipewire-pulse, I guess (unrelated to the network situation)

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#5 2025-04-06 14:22:32

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

Thank you but its still not working

% find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
bluetooth.service                        | bluetooth.target.wants
cups.path                                | multi-user.target.wants
cups.service                             | multi-user.target.wants
cups.service                             | printer.target.wants
cups.socket                              | sockets.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.nm-dispatcher.service | system
dbus-org.freedesktop.resolve1.service    | system
dbus-org.freedesktop.timesync1.service   | system
gcr-ssh-agent.socket                     | sockets.target.wants
getty@tty1.service                       | getty.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pcscd.socket                             | sockets.target.wants
pipewire.socket                          | sockets.target.wants
pulseaudio.socket                        | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
systemd-resolved.service                 | sysinit.target.wants
systemd-timesyncd.service                | sysinit.target.wants
tor.service                              | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether XXXXXXXXXXXXXXXXX brd ff:ff:ff:ff:ff:ff
    altname XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    inet 192.168.1.105/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp4s0
       valid_lft 86393sec preferred_lft 86393sec
    inet6 XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX/64 scope global dynamic noprefixroute 
       valid_lft 294sec preferred_lft 114sec
    inet6 fe80::1205:fe54:3e31:2619/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
% ip r
default via 192.168.1.1 dev wlp4s0 proto dhcp src 192.168.1.105 metric 600 
192.168.1.0/24 dev wlp4s0 proto kernel scope link src 192.168.1.105 metric 600

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#6 2025-04-06 14:41:12

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,389

Re: [SOLVED] No access to ipv4 addresses

dig -tA reddit.com
ping -4 -c1 reddit.com
ping -c1 151.101.1.140
ip r get 151.101.1.140

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#7 2025-04-06 14:53:42

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

% dig -tA reddit.com         
;; communications error to 192.168.1.1#53: timed out
;; communications error to 192.168.1.1#53: timed out
;; communications error to 192.168.1.1#53: timed out

; <<>> DiG 9.20.7 <<>> -tA reddit.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31065
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: c799fa3d0c8c79320100000067f294bc43ab441e6cf97e39 (good)
;; QUESTION SECTION:
;reddit.com.			IN	A

;; ANSWER SECTION:
reddit.com.		71	IN	A	151.101.65.140
reddit.com.		71	IN	A	151.101.193.140
reddit.com.		71	IN	A	151.101.1.140
reddit.com.		71	IN	A	151.101.129.140

;; Query time: 31 msec
;; SERVER: 2a02:908:2:b::1#53(2a02:908:2:b::1) (UDP)
;; WHEN: Sun Apr 06 16:50:36 CEST 2025
;; MSG SIZE  rcvd: 131
% ping -4 -c1 reddit.com
PING reddit.com (151.101.1.140) 56(84) bytes of data.

--- reddit.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
% ping -c1 151.101.1.140
PING 151.101.1.140 (151.101.1.140) 56(84) bytes of data.

--- 151.101.1.140 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
% ip r get 151.101.1.140
151.101.1.140 via 192.168.1.1 dev wlp4s0 src 192.168.1.105 uid 1000 
    cache

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#8 2025-04-06 15:23:31

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,389

Re: [SOLVED] No access to ipv4 addresses

;; communications error to 192.168.1.1#53: timed out
;; communications error to 192.168.1.1#53: timed out
;; communications error to 192.168.1.1#53: timed out
ping -c1 192.168.1.1

Do you control the router? Can you restart it?
You have a lease, but the router doesn't respond.

In doubt please post your complete system journal for the boot: 

sudo journalctl -b | curl -F 'file=@-' 0x0.st

(This will upload it to 0x0.st, your MACs will show up there, but they're rather meaningless unless
a) you post them across the internet what links those posts to the same origin
b) somebody wants to frame you by spoofing them as part of a wider effort to impersonate you…

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#9 2025-04-06 16:16:52

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

Okay, i set now the DNS Server from the router to quad9 and rebooted it.
Now I can access to reddit.

But i dont know if the DNS Server or the reboot fixed it.
Before i set the DNS Server and rebooted it i was able to ping the router:

% ping -c1 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=6.19 ms

--- 192.168.1.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 6.189/6.189/6.189/0.000 ms

but dig still had a timed out

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#10 2025-04-06 16:17:47

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

Thank you very much smile

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#11 2025-04-06 19:39:28

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,389

Re: [SOLVED] No access to ipv4 addresses

Most likely the reboot, you could not reach IPv4 addresses w/o DNS either.

Do you dual boot windows or something like that?
(The router might just have had a hiccup, but windows hibernates instead of shutting down what might have resulted in you re-using its lease on linux and the router being confused about what's going on with that host)

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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#12 2025-04-06 19:59:37

Saphira
Member
Registered: 2022-11-16
Posts: 11

Re: [SOLVED] No access to ipv4 addresses

No, these Arch Linux is the only OS i have installed.

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