ifbrp_filter
param.ifbrp_filter = 0;
ipfflags = param.ifbrp_filter;
param.ifbrp_filter &= ~IFBF_FILT_USEIPF;
param.ifbrp_filter |= (cmd->cmd_flags & CMD_INVERT) ? 0 : IFBF_FILT_USEIPF;
err(1, "%s %x", cmd->cmd_keyword, param.ifbrp_filter);
param->ifbrp_filter = sc->sc_filter_flags;
if (param->ifbrp_filter & ~IFBF_FILT_MASK)
nflags = param->ifbrp_filter;