Hi folks, libslirp and Passt have different approaches to sharing DNS resolvers with the guest system, each with their own benefits & drawbacks. On the libslirp project, we're discussing [1] how to support DNS failover. Passt already has support for this, but there is a drawback to its solution which prevents us from taking a similar approach: the resolvers are read exactly once, so if the host changes networks at runtime, the guest will not receive the updated resolvers and thus its connectivity will break. libslirp's current approach is to DNAT a single address exposed to the guest to one of the resolvers configured on the host. The problem here is that if that one resolver goes down, the guest can't resolve DNS names. We're considering changing so that instead of a single address, we expose a set of MAXNS addresses, and DNAT those 1:1 to the DNS resolvers registered with the host. Because the DNAT table lives on the host side, we can refresh the guest's resolvers whenever the host's resolvers change, but without the need to expire a DHCP lease (even with short leases, the guest will still lose connectivity for a time). Does this sound like an approach Passt would be open to adopting as well? Thanks. - Noah [1] https://gitlab.freedesktop.org/slirp/libslirp/-/issues/26