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// url => https://superuser.com/questions/723612/ping-and-nslookup-work-browsing-doesnt/723617

I believe that nslookup opens a winsock connection on the DNS port and issues a query, whereas ping uses the DNS Client service. You could try and stop this service and see whether this makes a difference.

Some commands that will reinitialize various network states :

Reset WINSOCK entries to installation defaults : netsh winsock reset catalog
Reset TCP/IP stack to installation defaults : netsh int ip reset reset.log
Flush DNS resolver cache : ipconfig /flushdns
Renew DNS client registration and refresh DHCP leases : ipconfig /registerdns

最合理的办法是通过发号策略, 每来一个长地址, 发一个号.

https://tech.meituan.com/MT_Leaf.html

https://www.zhihu.com/question/29270034/answer/46446911

The Liang-Barsky algorithm is a cheap way to find the intersection points between a line segment and an axis-aligned rectangle. It's a simple algorithm, but the resources I was pointed to didn't have particularly good explanations, so I tried to write a better one.

Consider a rectangle defined by x_min ≤ x ≤ x_max and y_min ≤ y ≤ y_max, and a line segment from (x_0, y_0) to (x_0 + Δ_x, y_0 + Δ_y). We'll be assuming at least one of Δ_x and Δ_y is nonzero.

(I'm working with Flash, so I'll be using the convention that y increases as you go down.)

We want to distinguish between the following cases:

	// KeyBinding
	[
	{ "keys": ["ctrl+shift+i"], "command": "insert_date", "args": { "format": "%Y-%m-%d %I:%M"} },
	{ "keys": ["ctrl+left"], "command": "move", "args": {"by": "subwords", "forward": false} },
	{ "keys": ["ctrl+right"], "command": "move", "args": {"by": "subword_ends", "forward": true} },
	{ "keys": ["alt+left"], "command": "jump_back" },
	{ "keys": ["alt+right"], "command": "jump_forward" },
	]

	void SyncGameObjectWithUIElement(Vector3 entityPos, Canvas canvas, RectTransform parentRectTransform, RectTransform targetRectTransform)
	{
	Vector3 screenPos = Camera.main.WorldToScreenPoint(entityPos);
	entityPos = screenPos / canvas.scaleFactor;
	Rect rect = parentRectTransform.rect;
	entityPos.x = entityPos.x - rect.width * 0.5f;
	entityPos.y = entityPos.y - rect.height * 0.5f;
	entityPos.z = 0;

	//targetRectTransform.anchoredPosition3D = entityPos;

	using System.Collections.Generic;
	using System.Linq;
	using System.Reflection;
	using UnityEditor;
	using UnityEngine;

	/// <summary>
	/// A base class for creating editors that decorate Unity's built-in editor types.
	/// </summary>
	public abstract class DecoratorEditor : Editor

	UseTab: Never
	ColumnLimit: 0
	IndentWidth: 4
	AccessModifierOffset: -2
	AllowShortIfStatementsOnASingleLine: false
	AllowShortBlocksOnASingleLine: true
	AllowShortFunctionsOnASingleLine: true
	IndentCaseLabels: false
	BreakConstructorInitializers: BeforeComma
	IndentCaseLabels: true

	public static string tolua_GetCallStack(IntPtr L, string msg)
	{
	tolua_pushtraceback(L);
	lua_pushstring(L, msg);
	lua_pushnumber(L, 1);
	if (lua_pcall(L, 2, -1, 0) == 0)
	{
	msg = lua_tostring(L, -1);
	}
	else

	local random = math.random
	local function uuid()
	local template ='xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
	return string.gsub(template, '[xy]', function (c)
	local v = (c == 'x') and random(0, 0xf) or random(8, 0xb)
	return string.format('%x', v)
	end)
	end

	nnoremap h <NOP>
	nnoremap j <NOP>
	nnoremap k <NOP>
	nnoremap l <NOP>

	nmap <C-O> :vsc View.NavigateBackward<CR>
	nmap <C-I> :vsc View.NavigateForward<CR>