No internet under Ubuntu 22.04 after booting into Windows 10

[Bret Busby]

On 18/12/2022 18:26, Bret Busby wrote:
> On 18/12/2022 18:19, sciguy wrote:
>> As stated, I have a desktop PC that is dual-boot, and where the 
>> network operates under Windows 10 but not Linux.
>>
>> I have been referred to this mailing list from Ubuntu Studio, since 
>> this appears to be a more general kind of problem.
>>
>> I followed some suggestions given by previous responders in other 
>> lists, regarding net commands to help diagnose the system.
>>
>> It was of some interest that I found that my router is assigning a 
>> different IP to the Windows 10 hostname than for the Linux hostname. 
>> However, the listing below doesn't really show any IP.
>>
>> The commands run were:
>> ip addr show
>> ip link show
>> dhclient -r eno1
>> sudo dhclient -v eno1
>>
>> The typescript is below:
>>
>> Script started on 2022-12-17 17:03:12-05:00
>> $ ip addr show
>> 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
>>         valid_lft forever preferred_lft forever
>> 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel 
>> state UP group default qlen 1000
>>      link/ether d8:50:e6:4d:0c:da brd ff:ff:ff:ff:ff:ff
>>      altname enp0s25
>>      inet6 fe80::e8e4:6dba:23d6:c035/64 scope link noprefixroute
>>         valid_lft forever preferred_lft forever
>> $ ip link show
>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
>> mode DEFAULT group default qlen 1000
>>      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>> 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel 
>> state UP mode DEFAULT group default qlen 1000
>>      link/ether d8:50:e6:4d:0c:da brd ff:ff:ff:ff:ff:ff
>>      altname enp0s25
>> $ dhclient -r eno1
>> $ sudo dhclient -v eno1
>> [sudo] password for paul:
>> Internet Systems Consortium DHCP Client 4.4.1
>> Copyright 2004-2018 Internet Systems Consortium.
>> All rights reserved.
>> For info, please visit https://www.isc.org/software/dhcp/
>>
>> Listening on LPF/eno1/d8:50:e6:4d:0c:da
>> Sending on   LPF/eno1/d8:50:e6:4d:0c:da
>> Sending on   Socket/fallback
>> DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 3 
>> (xid=0x3a1ec029)
>> DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 5 
>> (xid=0x3a1ec029)
>> DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 11 
>> (xid=0x3a1ec029)
>> DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 18 
>> (xid=0x3a1ec029)
>> DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 13 
>> (xid=0x3a1ec029)
>> ^C
>> $ exit
>>
>> Script done on 2022-12-17 17:04:57-05:00 [COMMAND_EXIT_CODE="130"]
>>
>> Thanks to anyone who can help or provide useful insight.
>>
>> Paul King
>>
> 
> Whilst it is not much help with your problem, I believe that your 
> connections to your router, are using DHCP, which dynamically assigns IP 
> addresses, so the IP address of each instance of connecting to it, may 
> be different, rather than it involving static IP addresses.
> 
> So, the issue of Windows having a different IP address, to the Linux 
> connection, is not to do with any difference in the operating system, 
> but, rather, is simply to do with a different instance of connection, 
> and therefore, a different IP address, due to the IP address being 
> dynamically allocated, according to a new connection instance.
> 
> That is my understanding.
> 
> ..
> Bret Busby
> Armadale
> West Australia
> (UTC+0800)
> ..............
> 
> 
Have you tried rebooting the router?

..
Bret Busby
Armadale
West Australia
(UTC+0800)
..............