starred/nix-config
1
0
Fork 0
mirror of https://github.com/ryan4yin/nix-config.git synced 2026-04-26 10:48:34 +02:00
Code Issues Packages Projects Releases 10 Wiki Activity

feat: migrate all nixos services from idols to 12kingdoms

Browse Source
This commit is contained in:
Ryan Yin
2024-03-29 11:58:48 +08:00
parent 4da995fa88
commit bf6bc4bee2
65 changed files with 422 additions and 446 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
hosts/12kingdoms-suzu/microvm/suzi/README.md Normal file
View File

@@ -0,0 +1,48 @@
# Dae - NixOS Router
A router(IPv4 only) with a transparent proxy to bypass the G|F|W.
NOTE: dae do not provides a http/socks5 proxy server, so a v2ray server is running on
[idols_kana](../idols_kana/proxy.nix) to provides a http/socks5 proxy service.
## Troubleshooting
### Can not access the global internet
1. Check whether the subscription url is accessible.
- If not, then you need to get a new subscription url and update the `dae`'s configuration.
1. Check the `dae` service's log by `journalctl -u dae -n 1000`.
### DNS cannot be resolved
1. `sudo systemctl stop dae`, then try to resolve the domain name again.
- If it works, the problem is caused by `dae` service.
- check dae's log by `journalctl -u dae -n 1000`
1. DNS & DHCP is provided by `dnsmasq` service, check the configuration of `dnsmasq`.
### DHCP cannot be obtained
1. `ss -tunlp`, check if `dnsmasq` is running and listening on udp port 67.
1. `journalctl -u dnsmasq -n 1000` to check the log of `dnsmasq`.
1. Request a new IP address by disconnect and reconnect one of your devices' wifi.
1. `nix shell nixpkgs#dhcpdump` and then `sudo dhcpdump -i br-lan`, check if the DHCP request is
received by `dnsmasq`.
1. The server listens on UDP port number 67, and the client listens on UDP port number 68.
1. DHCP operations fall into four phases:
1. Server **discovery**: The DHCP client broadcasts a DHCPDISCOVER message on the network
subnet using the destination address 255.255.255.255 (limited broadcast) or the specific
subnet broadcast address (directed broadcast).
1. IP lease **offer**: When a DHCP server receives a DHCPDISCOVER message from a client, which
is an IP address lease request, the DHCP server reserves an IP address for the client and
makes a lease offer by sending a DHCPOFFER message to the client.
1. IP lease **request**: In response to the DHCP offer, the client replies with a DHCPREQUEST
message, broadcast to the server,[a] requesting the offered address.
1. IP lease **acknowledgement**: When the DHCP server receives the DHCPREQUEST message from
the client, it sends a DHCPACK packet to the client, which includes the lease duration and
any other configuration information that the client might have requested.
1. So if you see only `DISCOVER` messages, the dhsmasq is not working properly.
## References
- <https://github.com/ghostbuster91/blogposts/blob/main/router2023-part2/main.md>
- <https://github.com/ghostbuster91/nixos-router>