fib_new_table
if (!fib_new_table(dev_net(dev), vrf->tb_id))
struct fib_table *fib_new_table(struct net *net, u32 id);
EXPORT_SYMBOL_GPL(fib_new_table);
tb = fib_new_table(net, tb_id);
tb = fib_new_table(net, cfg.fc_table);
alias = fib_new_table(net, RT_TABLE_MAIN);
tb = fib_new_table(net, cfg.fc_table);
return fib_new_table(net, id);