diff --git a/.github/ISSUE_TEMPLATE/00-bug-report.md b/.github/ISSUE_TEMPLATE/00-bug-report.md
index c0c9ff5..5a3c034 100644
--- a/.github/ISSUE_TEMPLATE/00-bug-report.md
+++ b/.github/ISSUE_TEMPLATE/00-bug-report.md
@@ -12,12 +12,12 @@ assignees: ''
 - [ ] I read the [README](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README.md)
 - [ ] I read the [Important notes](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README.md#important-notes)
 - [ ] I followed instructions to [configure VPN clients](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README.md#next-steps)
-- [ ] I checked [Troubleshooting](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#troubleshooting) and [VPN status](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#check-logs-and-vpn-status)
+- [ ] I checked [Troubleshooting](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#troubleshooting), [IKEv2 troubleshooting](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#troubleshooting) and [VPN status](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#check-logs-and-vpn-status)
 - [ ] I searched existing [Issues](https://github.com/hwdsl2/setup-ipsec-vpn/issues?q=is%3Aissue)
 - [ ] This bug is about the VPN setup scripts, and not IPsec VPN itself
 
 <!---
-If you need help with IPsec VPN itself, please see [Feedback & Questions](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README.md#feedback--questions). Ask VPN-related questions on the [Libreswan](https://lists.libreswan.org/mailman/listinfo/swan) or [strongSwan](https://lists.strongswan.org/mailman/listinfo/users) mailing list, or search e.g. [Stack Overflow](https://stackoverflow.com/questions/tagged/vpn).
+If you found a reproducible bug for the IPsec VPN, open a bug report at https://github.com/libreswan/libreswan. Ask VPN-related questions on the [Libreswan](https://lists.libreswan.org/mailman/listinfo/swan) or [strongSwan](https://lists.strongswan.org/mailman/listinfo/users) users mailing list, or search e.g. [Stack Overflow](https://stackoverflow.com/questions/tagged/vpn).
 --->
 
 **Describe the issue**
@@ -36,12 +36,12 @@ A clear and concise description of what you expected to happen.
 [Check logs and VPN status](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#check-logs-and-vpn-status), and add error logs to help explain the problem, if applicable.
 
 **Server (please complete the following information)**
-- OS: [e.g. Debian 10]
+- OS: [e.g. Debian 11]
 - Hosting provider (if applicable): [e.g. GCP, AWS]
 
 **Client (please complete the following information)**
-- Device: [e.g. iPhone 8]
-- OS: [e.g. iOS 13.6]
+- Device: [e.g. iPhone 12]
+- OS: [e.g. iOS 15]
 - VPN mode: [IPsec/L2TP, IPsec/XAuth ("Cisco IPsec") or IKEv2]
 
 **Additional context**
diff --git a/.github/ISSUE_TEMPLATE/10-bug-report-zh.md b/.github/ISSUE_TEMPLATE/10-bug-report-zh.md
index 745e00d..bc5216d 100644
--- a/.github/ISSUE_TEMPLATE/10-bug-report-zh.md
+++ b/.github/ISSUE_TEMPLATE/10-bug-report-zh.md
@@ -12,12 +12,12 @@ assignees: ''
 - [ ] 我已阅读 [自述文件](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README-zh.md)
 - [ ] 我已阅读 [重要提示](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README-zh.md#重要提示)
 - [ ] 我已按照说明 [配置 VPN 客户端](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README-zh.md#下一步)
-- [ ] 我检查了 [故障排除](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#故障排除) 以及 [VPN 状态](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#检查日志及-vpn-状态)
+- [ ] 我检查了 [故障排除](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#故障排除)，[IKEv2 故障排除](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto-zh.md#故障排除) 以及 [VPN 状态](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#检查日志及-vpn-状态)
 - [ ] 我搜索了已有的 [Issues](https://github.com/hwdsl2/setup-ipsec-vpn/issues?q=is%3Aissue)
 - [ ] 这个 bug 是关于 VPN 安装脚本，而不是 IPsec VPN 本身
 
 <!---
-如果你需要关于 IPsec VPN 本身的帮助，请参见 [问题和反馈](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/README-zh.md#问题和反馈)。VPN 的相关问题可在 [Libreswan](https://lists.libreswan.org/mailman/listinfo/swan) 或 [strongSwan](https://lists.strongswan.org/mailman/listinfo/users) 邮件列表提问，或者搜索比如 [Stack Overflow](https://stackoverflow.com/questions/tagged/vpn) 等网站。
+如果你发现了 IPsec VPN 的一个可重复的程序漏洞，请在 https://github.com/libreswan/libreswan 提交一个错误报告。VPN 的相关问题可在 [Libreswan](https://lists.libreswan.org/mailman/listinfo/swan) 或 [strongSwan](https://lists.strongswan.org/mailman/listinfo/users) 用户邮件列表提问，或者搜索比如 [Stack Overflow](https://stackoverflow.com/questions/tagged/vpn) 等网站。
 --->
 
 **问题描述**
@@ -36,12 +36,12 @@ assignees: ''
 [检查日志及 VPN 状态](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-zh.md#检查日志及-vpn-状态)，并添加错误日志以帮助解释该问题（如果适用）。
 
 **服务器信息（请填写以下信息）**
-- 操作系统: [比如 Debian 10]
+- 操作系统: [比如 Debian 11]
 - 服务提供商（如果适用）: [比如 GCP, AWS]
 
 **客户端信息（请填写以下信息）**
-- 设备: [比如 iPhone 8]
-- 操作系统: [比如 iOS 13.6]
+- 设备: [比如 iPhone 12]
+- 操作系统: [比如 iOS 15]
 - VPN 模式: [IPsec/L2TP, IPsec/XAuth ("Cisco IPsec") 或 IKEv2]
 
 **其它信息**