[Libguestfs] [PATCH nbdkit v2] Add support for AF_VSOCK.
v1 was discussed here:
https://www.redhat.com/archives/libguestfs/2019-October/thread.html#00100
v2:
- Bind to VMADDR_CID_ANY (instead of HOST) and update the
documentation accordingly.
- Don't bother with SOCK_CLOEXEC fallback path that can
never be used.
Rich.