Re: Common vlan with no host privileges

[Narcis Garcia]

+ Is there some way to just make guests have their simple SLIRP scenario 
and each one sees a single NIC with dynamically acquired 10.0.2.15 and 
10.0.2.16 IP addresses in same unified guests network?


El 23/10/24 a les 21:03, Narcis Garcia ha escrit:
> In a Debian 12 host (Qemu 7.2.13), not using superuser privileges,
> I launch VM1:
> $ qemu-system-x86_64 -name "Windows XP" (...)
>      -device rtl8139,netdev=net0
>      -netdev user,id=net0,smb=/home/_all/public
>      -netdev socket,id=vlan-winxp,mcast=230.0.0.1:1234
>      -device rtl8139,netdev=vlan-winxp
> and VM2:
> $ qemu-system-x86_64 -name debian10
>      -device rtl8139,netdev=net0
>      -netdev user,id=net0,smb=/home/_all/public
>      -netdev socket,id=vlan-winxp,mcast=230.0.0.1:1234
>      -device virtio-net-pci,netdev=vlan-winxp
>
> Then in guest VM1 first (default) NIC acquires address 10.0.2.15/24 and 
> I configure manually second NIC to have address 192.168.139.1/24
> In guest VM2 first (default) NIC also acquires address 10.0.2.15/24 and 
> I configure manually second NIC to have address 192.168.139.139/24
>
>  From VM1 I ping to 192.168.139.139 with result "Timeout"
>  From VM2 I ping to 192.168.139.1 with result "Destination Host 
> Unreachable"
>
> My goal is to make a Windows XP (VM1) access old Samba in Debian 10 
> (VM2), and VM2 accesses to host smb/qemu resource. Both guests should 
> reach WAN/Internet through user net (virtual gateway 10.0.2.2)
>
> My questions:
> 1. What do I need to add to command line so communications between 
> guests works?
> 2. Is there some documentation about fd= and localaddr= parameters I 
> found on web comments? What are they intended for?
>
> Thank you.

--
Narcis Garcia