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的獨服在docker中使用IPv6
OVH的機器默認給的是/128，但是其實整個/64都是可以用的，如果添加到網卡上是可以雙向ping通的。
但是如果docker的bridge網路分配了一個IPv6，卻無法ping通。喝了一瓶果汁之後我發現是因為沒有向（OVH的）路由器發鄰居發現協議包（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.
解決Android 6.0 Marshmallow中Xposed的模塊列表為空
升級Nexus5 到6.0.1 (M4B30Z, Dec 2016)之後，Xposed的模塊列表變成空的了，所有的模塊也都失效了。沒有xposed，怎麼種莊稼。於是我打開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帖中說一般情況下這個文件會在啟用任意一個模塊後創建。然而現在它並沒有被創建。於是我去建了一個，然後chmod 644以及chown到應用到uid（可以通過啟動應用之後ps|grep xposed查看uid，形如u0_a??），重啟了一下，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 |
好像哪裡不對
想起來Android從蘿莉棒開始SELinux就是enforce了，所以大概是這個問題。（我們可以通過dmesg|grep audit來查看被SELinux過濾的各種奇怪操作。）於是看了一下默認的文件context和我們剛創建的文件的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 |
那麼我們把這個conf/modules.list也改成u:object_r:app_data_file:s0:c512,c768這個context好了
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon是toybox中帶的一個applet，我們也可以用chcon來手動更改context。
搭建一個apt二進位倉庫
倉庫中有openresty (nginx), php (7.0-7.1), mysql (5.7-8.0), nmap等，詳見這裡；
適用於Ubuntu 16.04 32位或64位；一鍵配置腳本
wget https://dl.yooooo.us/build/setup.sh -O -|sudo bash
一個使用Cloudflare API v4的動態DNS腳本
分享一個使用Cloudflare API v4的動態dns腳本（Gist地址或本地下載）。
因為11月Cloudflare就要下線v1版本的API了，而Openwrt里的ddns-scripts並沒有支持新版![[攤手]](http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/09/pcmoren_tanshou_org.png "[攤手]")
，所以自己寫了一個。
僅依賴curl（可以改成wget）。支持v4和v6。會請求ip.yooooo.us得到公網IP地址，怕隱私泄露的可以自己搭一個。
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.
