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67 lines
2.0 KiB
Markdown
67 lines
2.0 KiB
Markdown
# Troubleshooting
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### Unknown bpf_trace_printk
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```
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invalid argument: unknown func bpf_trace_printk
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```
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Solution:
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Compile dae with CFLAG `-D__REMOVE_BPF_PRINTK`. See [build-by-yourself](build-by-yourself.md).
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### Binding to WAN but no network
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**1. Troubleshoot local DNS service**
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If you use `systemd-resolved`, `dnsmasq` or other local DNS service in `/etc/resolv.conf`, do not use their DNS service.
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Methods to disable their DNS service:
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1. Method 1: by modifying their configurations.
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2. Method 2: by modifying the content of `/etc/resolv.conf` to `nameserver 223.5.5.5` or other DNS.
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Alternatively, if you really want to use them, refer to [external-dns](external-dns.md).
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**2. Troubleshoot firewall**
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If you bind to wan, make sure firewall is stopped or `12345` is allowed by firewall. Don't worry about the security of this port because this port has its own firewall rule.
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Usual firewalls on Linux:
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```
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ufw
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firewalld
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```
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**3. Troubleshoot PPPoE**
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dae does not support PPPoE yet. We are working on it. However, binding to LAN for other machines should work fine.
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### Binding to LAN but bad DNS in other machines
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**1. Troubleshoot config of dae**
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Make sure you have bind to the correct LAN interfaces.
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For example, if your use the same interface eth1 for WAN and LAN, write it as `wan_interface: eth1` and also in `lan_interface: eth1`. If the LAN interfaces you want to proxy are eth1 and docker0, write them both as `lan_interface: eth1,docker0`.
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**2. Troubleshoot DNS**
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To verify on another machine in LAN:
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```
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curl -i 1.1.1.1
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curl -i google.com
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```
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If the first line has a response and the second line doesn't, check whether port `53` is occupied by others on dae's machine.
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```
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netstat -ulpen|grep 53
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# or
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# lsof -i:53 -n
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```
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If does, stop the service process or change its listening port from 53 to others. Do not forget to modify `/etc/resolv.conf` to make DNS accessible (for example, with content `nameserver 223.5.5.5`, but do not use `nameserver 127.0.0.1`).
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