multicast_all
if (nic->flags & multicast_all)
config->multicast_all = 0x1; /* 1=accept, 0=no */
nic->flags |= multicast_all;
nic->flags &= ~multicast_all;
/*21*/ u8 X(X(pad21_1:3, multicast_all:1), pad21_2:4);