FreeDos in qemu: no internet connection any more

[Christian]

    Hello everyone, :-)
      
      
      
      
      Quite a time ago I downloaded an iso-file of FreeDOS (1.2) and the
      installation went well.
      
      In principle FreeDOS works fine with the exception of networking.
      
      I simply can´t get qemu to let FreeDOS connect to the internet,
      but formerly I could!

My command-line is:

qemu-system-i386 -m 32M -drive file=drivec.img,media=disk,format=raw -net nic,model=pcnet -net user -drive file=FD12CD.iso,media=cdrom -boot order=d

    This used to work with respect to
      internet-connection, but alas: no more.
      
      According to the instructions on
http://wiki.freedos.org/wiki/index.php/Networking_FreeDOS_-_Quick_Networking_HowTo
      
      I installed FDNET, mTCP and wget in FreeDOS. So things should
      work. Yet they don´t (any more).
      
      When starting FreeDOS everything looks right at first:
      
    
QEMU network detected

DHCP request sent, attempt 1: Offer received, Acknowledged
Good news everyone!

IPADDR = 10.0.2.15
NETMASK = 255.255.255.0
GATEWAY = 10.0.2.2
NAMESERVER = 10.0.2.3  
LEASE_TIME = 86400 seconds

But when trying to use the  links browser internet connection doesn´t seem to be established:

    configuring
      through DHCP...failed
    
configuring through RARP...failed
error loading ... URL
Host not found


I don´t know whether it has something to do with the fact that my means of connecting to the internet has changed in the meantime.

I used to use a 3G-umts-stick (Huawei E 1550) , which was recognized as a modem and used “ppp0”.

My new 4G-stick is Huawei E 3372 and this one seems to work as a router; so my internet connection 
is recognized as LAN (wired) connection.

That´s the only difference in the setup compared to earlier...
... apart from the fact that qemu is a newer version now (4.2.1)

Has anyone got any idea what could be done about it?

Many thanks for your help in advance...
... and many greetings from Rosika :-)


P.S.:

host system: Linux/Lubuntu 20.04.4 LTS, 64 bit