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<a class="featured-image-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
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<span class="date">13 August</span>
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<span> / </span>
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<span class="author">
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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</span>
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<span> / </span>
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<span class="category">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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</div>
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<div class='excerpt-header'>
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<h2 class='excerpt-title'>
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<a href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/ "> [筆記] 透過 wireguard 建立多點 site to site VPN / Multiple Site to Site VPN Using Wireguard </a>
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</h2>
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</div>
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<div class='excerpt-content'>
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<article>
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<p>因為實在受夠了現在用的 openwrt + strongswan 建立 IPSec VPN</p>
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<p>雖然說其實沒有什麼不好，但是畢竟不是我建立的，而當初的文件也都不見了</p>
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<p>完全沒辦法了解當時設計的邏輯，造成後續debug 困難</p>
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<p>可以想像一下，一台VPN router ping 不到remote、ping不到internet、甚至ping不到自己 是要怎麼debug !?(翻桌</p>
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<p>之前買了兩台edgerouter X 拿來玩了一下 wireguard，感覺還不錯，不過只有測試到點對點</p>
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<p>這次試試看躲在gateway後面，看看能不能建立多點的VPN環境</p>
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<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</article>
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</div>
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</div>
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</div>
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<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
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<a class="featured-image-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
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<div class="excerpt-container">
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<div class="excerpt-meta">
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<span class="date">06 August</span>
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<span> / </span>
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<span class="author">
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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</span>
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<span> / </span>
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<span class="category">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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</div>
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<div class='excerpt-header'>
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<h2 class='excerpt-title'>
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<a href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/ "> [筆記] 在edgerouter上用wireguard 建立site to site VPN / Site to Site Vpn Using Wireguard in Two Edgerouters </a>
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</h2>
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</div>
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<div class='excerpt-content'>
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<article>
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<p>之前總部和分公司之間 是用buffalo 的小AP 灌 openwrt</p>
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<p>然後用strongswan 來打 IPSEC site to site VPN</p>
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<p>config 看起來不是很難 (只是看起來)</p>
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<p>但是實際上已經找不到當初的文件</p>
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<p>所以要維護很困難(光那些RSA KEY 就不知道為何、如何產生)</p>
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<p>後來採購了兩台edgerouter X 做測試</p>
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<p>也用openvpn 成功的建立了 site to site VPN</p>
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<p>本來想說 openvpn 已經夠簡單了</p>
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<p>今天看到文章說用wireguard 可以更簡單</p>
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<p>於是研究了一下，發現還真的很簡單！</p>
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<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</article>
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</div>
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</div>
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</div>
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<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
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<a class="featured-image-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
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<div class="excerpt-container">
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<div class="excerpt-meta">
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<span class="date">05 August</span>
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<span> / </span>
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<span class="author">
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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</span>
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<span> / </span>
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<span class="category">
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<a href="/categories/ansible">ansible</a>
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</span>
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</div>
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<div class='excerpt-header'>
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<h2 class='excerpt-title'>
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<a href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/ "> [筆記] 為了保存log 用script 指令執行ansible / Another Way to Keep Ansible Log using script command </a>
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</h2>
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</div>
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<div class='excerpt-content'>
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<article>
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<p>之前為了能夠在執行完 ansible playbook 後，能有個log 可以看</p>
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<p>所以在每次執行的時候，都要加入 tee 的指令</p>
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<p>像是</p>
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<pre><code>ANSIBLE_CONFIG=/home/D/ansiblecontrol/ansible.cfg /usr/local/bin/ansible-playbook /home/D/ansiblecontrol/playbook.user_client.yml --vault-password-file=/home/D/ansiblecontrol/vault.passwd -i /home/D/ansiblecontrol/inventory/production -f1 --limit tyuserclients |tee /tmp/tyuserclients.log
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</code></pre>
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<p>一直都是放在crontab 裡面執行，也就沒有去管他</p>
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<p>反正也沒有人關心結果怎樣 (攤手</p>
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<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</article>
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</div>
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</div>
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</div>
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<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
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<a class="featured-image-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
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<div class="excerpt-container">
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<div class="excerpt-meta">
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<span class="date">31 July</span>
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<span> / </span>
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<span class="author">
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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</span>
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<span> / </span>
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<span class="category">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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</div>
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<div class='excerpt-header'>
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<h2 class='excerpt-title'>
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<a href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/ "> [筆記] 用pxe 安裝系統，完成後送出郵件通知 / send mail notification after pxe install </a>
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</h2>
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</div>
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<div class='excerpt-content'>
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<article>
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<p>最近有個任務，需要大量安裝client</p>
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<p>想用PXE來處理，只要user開機按F12(acer 桌機) 選擇PXE Boot</p>
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<p>然後選擇OS版本，就可以自動進行安裝</p>
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<p>安裝完成後，會自動重新開機，接著就用ansible來做user環境設定</p>
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<p>PXE的部份本來是沒有什麼問題，自動安裝系統的部份都做好了</p>
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<p>可是因為這次的量比較多，想說讓每一台在完成PXE安裝後的第一次重開機</p>
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<p>就送出一封郵件來通知我，說已經完成安裝，可以執行ansible 了</p>
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<p>看似很簡單的一件事情，卻搞了我兩天….</p>
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<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</article>
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</div>
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</div>
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</div>
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<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
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<a class="featured-image-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
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<div class="excerpt-container">
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<div class="excerpt-meta">
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<span class="date">23 July</span>
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<span> / </span>
|
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<span class="author">
|
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|
<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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</span>
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<span> / </span>
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<span class="category">
|
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<a href="/categories/ansible">ansible</a>
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</span>
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</div>
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<div class='excerpt-header'>
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<h2 class='excerpt-title'>
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<a href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/ "> [ansible] 用 ip 位置判斷是否要執行task /ansible run task depends on ipaddr </a>
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</h2>
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</div>
|
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<div class='excerpt-content'>
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<article>
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<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</p>
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<p>在有權限使用proxy 服務的user的環境中，加入proxy 的設定</p>
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<p>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</p>
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<p>proxy server 那邊是採用ip 來控制，所以這邊也跟著用 ip 來判斷要不要修改 /etc/environment</p>
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<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</article>
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</div>
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</div>
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</div>
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