OVH gives you a /128 block by default. But in fact you can use the whole /64. You can simply add a /64 address to eth0.
But if you activate IPv6 in docker and try to allocate an address in bridge network, you will find the address is not ping-able. The problem here is we should send a NDP notification to OVH router.
配置OVH的独服在docker中使用IPv6
OVH的机器默认给的是/128，但是其实整个/64都是可以用的，如果添加到网卡上是可以双向ping通的。
但是如果docker的bridge网络分配了一个IPv6，却无法ping通。喝了一瓶果汁之后我发现是因为没有向（OVH的）路由器发邻居发现协议包（NDP）。
Solve Xposed module list become empty on Android 6.0 Marshmallow
Recently I found module list in Xposed become empty after I upgrade my Nexus5 to 6.0.1 (M4B30Z, Dec 2016). And all the modules are not activating. So I open logcat and see the following:
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01-10 21:35:02.682 294 294 E Xposed : Cannot load any modules because /data/data/de.robv.android.xposed.installer/conf/modules.list was not found |
Rovo89 said on a xda post that this file should be created if any module is activated. But somehow it didn’t do so on my Nexus5. So I create one myself and set correct permission (0644) and uid (you can run the Xposed Installer app and check the uid through ps |grep xposed). Then I reboot and check logcat again:
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01-10 21:29:39.485 295 295 E Xposed : Errors during Xposed initialization 01-10 21:29:39.485 295 295 E Xposed : java.io.IOException: Permission denied while reading /data/data/de.robv.android.xposed.installer/conf/modules.list |
Looks like it’s still not working.
Then I realise that Android started to set SELinux to enforce from Lollipop (5.0) so this should be the problem. (We can use dmesg|grep audit to check if the problem really related to SELinux. ) I compared a random file under /data/data to the file we just created:
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root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/cache/repo_cache.db -rw-rw---- u0_a379 u0_a379 u:object_r:app_data_file:s0:c512,c768 repo_cache.db root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/conf/modules.list -rw------- root root u:object_r:app_data_file:s0 modules.list |
So all we need to do is to change this conf/modules.list to u:object_r:app_data_file:s0:c512,c768 as well
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon is a applet shipped with toybox, we can also use chcon to manually set SELinux context.
解决Android 6.0 Marshmallow中Xposed的模块列表为空
升级Nexus5 到6.0.1 (M4B30Z, Dec 2016)之后，Xposed的模块列表变成空的了，所有的模块也都失效了。没有xposed，怎么种庄稼。于是我打开logcat看了一眼。
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01-10 21:35:02.682 294 294 E Xposed : Cannot load any modules because /data/data/de.robv.android.xposed.installer/conf/modules.list was not found |
rovo89在xda的QA帖中说一般情况下这个文件会在启用任意一个模块后创建。然而现在它并没有被创建。于是我去建了一个，然后chmod 644以及chown到应用到uid（可以通过启动应用之后ps|grep xposed查看uid，形如u0_a??），重启了一下，再瞄了一眼logcat。
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01-10 21:29:39.485 295 295 E Xposed : Errors during Xposed initialization 01-10 21:29:39.485 295 295 E Xposed : java.io.IOException: Permission denied while reading /data/data/de.robv.android.xposed.installer/conf/modules.list |
好像哪里不对
想起来Android从萝莉棒开始SELinux就是enforce了，所以大概是这个问题。（我们可以通过dmesg|grep audit来查看被SELinux过滤的各种奇怪操作。）于是看了一下默认的文件context和我们刚创建的文件的context：
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root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/cache/repo_cache.db -rw-rw---- u0_a379 u0_a379 u:object_r:app_data_file:s0:c512,c768 repo_cache.db root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/conf/modules.list -rw------- root root u:object_r:app_data_file:s0 modules.list |
那么我们把这个conf/modules.list也改成u:object_r:app_data_file:s0:c512,c768这个context好了
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon是toybox中带的一个applet，我们也可以用chcon来手动更改context。
搭建一个apt二进制仓库
仓库中有openresty (nginx), php (7.0-7.1), mysql (5.7-8.0), nmap等，详见这里；
适用于Ubuntu 16.04 32位或64位；一键配置脚本
wget https://dl.yooooo.us/build/setup.sh -O -|sudo bash
一个使用Cloudflare API v4的动态DNS脚本
分享一个使用Cloudflare API v4的动态dns脚本（Gist地址或本地下载）。
因为11月Cloudflare就要下线v1版本的API了，而Openwrt里的ddns-scripts并没有支持新版![[摊手]](http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/09/pcmoren_tanshou_org.png "[摊手]")
，所以自己写了一个。
仅依赖curl（可以改成wget）。支持v4和v6。会请求ip.yooooo.us得到公网IP地址，怕隐私泄露的可以自己搭一个。
This is a DDNS script using Cloudflare APIv4 written in bash (Gist or Download directly).
I wrote this because Cloudflare is going to remove support for the old API on Nov. this year. And the ddns-scripts package in Openwrt is not yet supporting the new API .
This script only depends on curl (can be modified to use wget). It will use ip.yooooo.us to query IPv4 and IPv6. You can use this link to set up your own query server.
