@damiengm they didn't tell you what they did? did they just turn off IPv6 completely on the interface, or were they able to somehow selectively disable it on the iSCSI portal only?
In case it helps anyone, I ended up settling on using v0.1.189 since it's WHQL-certified and 2012R2 strict driver signing requirements are satisfied without too much mucking around.
As of 2026-08-14 what is the suggested version of virtio-win drivers to use for 2012R2 VMs on PVE 9? I am using 0.1.221 and it seems to work fine. But worried about the comment above about buggy scsi driver... is 0.1.189 a better choice?
I stopped my Synology from advertising IPv6 on the iscsi targets with something like:
nas_ip=192.168.10.10
sed -Ei "s/^(network_portals)=(.*)/\1=$nas_ip:3260/" /usr/syno/etc/iscsi_target.conf
You can use Task Scheduler to run this code at startup.
Eager to try this! My homelab uses 5Gbps USB-C Realtek r8157-based NICs for the storage network, and I have struggled with the DKMS driver. In 7.1 that driver is now mainlined into the kernel: https://lwn.net/Articles/1066121