Hi, I'm very surprised SO_BINDTODEVICE is still not supported on nginx. Nowadays the SO_BINDTODEVICE is not dedicated to DHCP and this feature is absolutely not deprecated because very useful to specify specific routes on an interface and force a service to use them instead of the default of system, it acts as a filter on kernel side the socket will only see routes of the specified device, tby Emeric - Nginx Mailing List - English