Commit 405393
2026-08-13 09:53:24 Niklas Polke: Create NanoPi Network Configuration| /dev/null .. nanopi r3s lts/network configuration.md | |
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| + | # Network Configuration |
| + | |
| + | ## Goals |
| + | - default WAN port is used for link to local network with router |
| + | - dhcp yes |
| + | - default LAN port is used for direct connection to laptop |
| + | - either without ICS (Internet Connection Sharing) and link local addresses (169.254.xxx.xxx) without gateway |
| + | - or with ICS and network (192.168.137.xxx) and with gateway (laptop) |
| + | |
| + | | Situation | Windows Ethernet | NanoPi | SSH | Internet NanoPi | |
| + | | - | - | - | - | - | |
| + | | home, connected to Router | *doesn't matter* | DHCP (192.168.2.x) | 192.168.2.x | with end0 over Router | |
| + | | direct Laptop, ICS | 192.168.137.1 | DHCP (192.168.137.x) | nanopi-r3s-lts.local | with enp1s0 over Laptop | |
| + | | direct Laptop, no ICS | 169.254.x.x | 169.254.x.x | nanopi-r3s-lts.local | no | |
| + | |
| + | `/etc/netplan/30-ethernets-dhcp.yaml`: |
| + | ```yaml |
| + | network: |
| + | version: 2 |
| + | ethernets: |
| + | end0: |
| + | dhcp4: yes |
| + | dhcp6: yes |
| + | |
| + | enp1s0: |
| + | dhcp4: yes |
| + | link-local: |
| + | - ipv4 |
| + | - ipv6 |
| + | optional: true |
| + | ``` |
| + | |
| + | :::warning |
| + | if direct connection to Laptop and then switching ICS on to off the NanoPi doesn't recognize the change - quickfix: disconnect/connect LAN cable |
| + | ::: |
| + | |
| + | ## Install avahi daemon for mDNS service (to connect with <hostname> within link-local) |
| + | ```bash |
| + | sudo apt update |
| + | sudo apt install avahi-daemon |
| + | |
| + | # check |
| + | systemctl status avahi-daemon --no-pager |
| + | |
| + | # typically NOT needed |
| + | sudo systemctl enable --now avahi-daemon |
| + | ``` |