How do I configure NetBSD's network settings?

Configuring network settings in NetBSD involves editing configuration files and using command-line tools. Here’s a step-by-step guide:

Edit the Network Configuration File:
- Open the /etc/rc.conf file using a text editor like vi or nano.
- Add or modify the following lines to configure your network interfaces:
```
ifconfig_em0="inet 192.168.1.100 netmask 255.255.255.0"
defaultrouter="192.168.1.1"
```
  Here, em0 is the interface name, 192.168.1.100 is the IP address, 255.255.255.0 is the netmask, and 192.168.1.1 is the default gateway.
Restart Networking Services:
- Apply the changes by restarting the networking services:
```
sh /etc/netstart
```
  Or, you can reboot the system:
```
reboot
```
Verify Configuration:
- Check the network configuration using the ifconfig command:
```
ifconfig em0
```
- Ensure that the IP address, netmask, and other settings are correctly applied.
DNS Configuration:
- Edit the /etc/resolv.conf file to configure DNS servers:
```
nameserver 8.8.8.8
nameserver 8.8.4.4
```
  Here, 8.8.8.8 and 8.8.4.4 are Google's public DNS servers.

Example:
If you want to configure the em0 interface with an IP address of 192.168.1.100, a netmask of 255.255.255.0, and a default gateway of 192.168.1.1, you would add the following lines to /etc/rc.conf:

ifconfig_em0="inet 192.168.1.100 netmask 255.255.255.0"
defaultrouter="192.168.1.1"

After saving the file, restart the networking services or reboot the system to apply the changes.

For cloud-related configurations, consider using services like Tencent Cloud's Virtual Private Cloud (VPC) to manage network settings in a more scalable and flexible environment.