Hello,
Just for curiosity I found this instructions:
https://wiki.netbsd.org/ports/qemu_riscv/
$ gunzip netbsd-GENERIC64.gz
$ gunzip riscv64.img.gz
$ qemu-img resize riscv64.img 20g
$ qemu-system-riscv64 \
-M virt \
-m 4g \
-kernel netbsd-GENERIC64 \
-drive if=none,file=riscv64.img,id=hd0,format=raw \
-device virtio-blk-device,drive=hd0 \
-device virtio-rng-device \
-netdev type=user,id=net0 \
-device virtio-net-device,netdev=net0,mac=00:11:22:33:44:55 \
-append "root=dk1" \
-nographic
I executed them in my NetBSD 10.1 raspberrypi4 host. Riscv guest system
boots and works fine (a bit slow, of course) but it cannot reach outside
world:
raspa4-riscv# ftp ftp.netbsd.org
Trying [2001:470:a085:999::21]:21 ...
It stucks there for looong time. It appears that user mode network does
not work well.
Also tried to install sets from sysint program and network did not work
either.
I have set up a bridge mode network and worked just fine following the
guide:
"Configure NetBSD to do this all at boot time by editing /etc/ifconfig.tap0:
create
descr "NetBSD VM" up
! ifconfig bridge0 create
! ifconfig bridge0 descr "LAN VM bridge" up
! brconfig bridge0 add tap0 add wm0"
and modified startup script to use the tap0 device:
netbsd-raspa4$ cat arranca-riscv-bridged.sh
#!/bin/sh
qemu-system-riscv64 \
-M virt \
-m 2g \
-kernel netbsd-GENERIC64 \
-drive if=none,file=riscv64.img,id=hd0,format=raw \
-device virtio-blk-device,drive=hd0 \
-device virtio-rng-device \
-netdev tap,id=tap0,ifname=tap0,script=no\
-device virtio-net-device,netdev=tap0,mac=00:11:22:33:44:55 \
-append "root=dk1" \
-nographic
It worked just fine.
After a while I found the following in the NetBSD Guide:
"""30.4.2. NetBSD VMs lacking IPv6
QEMU's networking will sometimes configure an invalid IPv6 route on
IPv4-only configurations, meaning programs like the NetBSD packaging
tools will prefer IPv6 and spend a long time timing out before succeeding.
Work around this by editing /etc/rc.conf to prefer IPv4 addresses:
ip6addrctl=YES
ip6addrctl_policy="ipv4_prefer """
I modified rc.conf that way, rebooted the guest and It worked!:
raspa4-riscv# ftp ftp.netbsd.org
Trying 199.233.217.201:21 ...
Connected to ftp.netbsd.org.
220 ftp.NetBSD.org FTP server (NetBSD-ftpd 20230930) ready.
Name (ftp.netbsd.org:root): anonymous
331 Guest login ok, type your name as password.
Password:
230-
The NetBSD Project FTP Server located in San Jose, CA, USA
1 Gbps connectivity
So, I suggest it would be a good idea to modify the WEB page at
https://wiki.netbsd.org/ports/qemu_riscv/ to include that rc.conf
modification.
Thanks so much.
Regards.
Ramiro.
