I am using Windows 10 as a hostsystem with VirtualBox Version 7.014r. The virtual system is Ubuntu 22.04.4 TLS 64 bit connected via Virtual Box Host-Only Ethernet Adapter in NAT mode. This was working fine since a number of years, but today I experienced that that network connection is not more in function suddenly after a reboot, there have been no changes. I figured out that the Virtual Box Host-Only Ethernet Adapter seems to work (I did deactivate and reactivate it) there are no changes in the Windows system, too.
In the Ubuntu system i recognized that there is only a IPv6 Ip address (DHCP is used) an no IPv4 (which was used before) an there is no networktraffic shown even the interface is activated in Virtual box. I also tried to release the DCHP address an renew it (dhclient -r an dhclient) - this task never ends. Does anyone have an idea to solve the problem - to me is seems some windows interface problem ?
Below the output ifconfig:
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::a00
fe48:cc81 prefixlen 64 scopeid 0x20<link>ether 08:00:27:48:cc:81 txqueuelen 1000 (Ethernet)
RX packets 3880 bytes 235452 (235.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 86 bytes 8510 (8.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Lokale Schleife)
RX packets 5626 bytes 403186 (403.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5626 bytes 403186 (403.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Regards
Electrific