fib_epoch_call
fib_epoch_call(destroy_fd_instance_epoch, &fd->fd_epoch_ctx);
fib_epoch_call(destroy_fdh_epoch, &old_fdh->fdh_epoch_ctx);
fib_epoch_call(destroy_fdh_epoch, &old_fdh->fdh_epoch_ctx);
fib_epoch_call(release_nhop_epoch, &nrd->ctx);
fib_epoch_call(destroy_fdh_epoch, &old_fdh->fdh_epoch_ctx);
void fib_epoch_call(epoch_callback_t callback, epoch_context_t ctx);
fib_epoch_call(epoch_dxr_destroy, &dxr->epoch_ctx);