On 8/30/22 05:22, Fangge Jin wrote: > Hi > > I met an issue when testing trustGuestRxFilters: > Attach a macvtap interface with trustGuestRxFilters=’yes’ to vm, then > change interface mac address in vm. > Should libvirt update interface mac in live vm xml accordingly? If not, > vm network will be broken after > managedsaving and restoring vm. > > BR, > Fangge Jin The MAC is updated accordingly. It's just that it does not survive save+restore (and thus possibly migration). This is a bug in libvirt, please file one. What we could do is just before resuming vCPUs, we could query-rx-filters for those <interface/>s where trustGuestRxFilters is enabled and change MAC, just like we do when NIC_RX_FILTER_CHANGED event is delivered. Michal
