Hi Gerd,

quoted

+/* Option name for socket's service label.  Use as the option name in
+ * setsockopt(3) or getsockopt(3) to set or get the service label for a
socket.
+ * The service label is a C-style NUL-terminated string.  Only available
for
+ * hypervisor endpoints.
+ */
+
+#define SO_VM_SOCKETS_SERVICE_LABEL 4
+

What is this and how does it work?

Oops, that's specific to ESX.  Thankfully it's only in the header and not
in anything under net/vmw_vsock, so removing it is easy.  I'll send out a
patch in the morning.

Thanks!
- Andy