代码

network = {
    {name = "grauna",    IP = "210.26.30.34"},
    {name = "arraial",   IP = "210.26.30.23"},
    {name = "lua",       IP = "210.26.23.12"},
    {name = "derain",    IP = "210.26.23.20"},
    {name = "C++",       IP = "210.26.23.22"},
}

-- 增加 string.lower 为忽略大小写。
table.sort(network, function (a,b)
    return (string.lower( a.name) < string.lower(b.name))
end)

-- 将network的所有成员显示出来
for k,v in pairs(network) do
    print(k,v.name)
end

测试