old = r->filter_control;
- if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
+ if (flags == ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
r->filter_control = old | (1 << 9) /* unicast promiscuous */ ;
- else
+ else if (flags == ETHERNET_INTERFACE_FLAGS_DEFAULT_L3)
r->filter_control = old & ~(1 << 9);
+ else
+ return ~0;
return old;
}