• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

While connected to a phone-based hotspot you might notice that your network performance degrades suddenly. This is often due to IP address overlaps between devices. These conflicts happen because both devices are trying to manage network traffic. Sometimes they end up using duplicate DNS configurations, which causes IP address conflicts.

The first step in diagnosing this issue is to check your network settings. Look at the subnet range your router is using. Most home routers default to 192.168.0.x. Now check the IP range your phone is assigning when it acts as a hotspot. Many mobile carriers use the same ranges, which causes routing ambiguity. If both devices are using the same range, your devices can't tell which gateway to use, leading to unreliable latency.

Temporarily turn off tethering to isolate the issue. If it does, the problem is due to IP overlap. Now reconnect the tether and check if your smart home devices go offline. Sometimes your phone will assign itself an overlapping default route, causing an IP conflict warning. You can check this by looking at your device's network details on your computer or phone. Look for messages about failed DHCP lease.

Many users encounter nested NAT. This occurs when the hotspot creates its own subnet and your Wi-Fi gateway is also performing NAT. This double layer can slow down performance and break certain apps that rely on end-to-end connectivity. To fix this, you can try disabling NAT on your router. This turns your router into a wireless access point and lets your phone handle all the routing. Alternatively, you can use the phone as your primary access point, though this may limit device capacity.

Tweak your phone’s network sharing options. Some phones allow you to change the hotspot's IP range. If you're using a both frequency bands on your router, and your phone is using a nearby Wi-Fi spectrum, latency spikes. Try switching your router to a less congested frequency. You can use a channel detection software to see how dense your RF environment is.

Perform a full reboot of your network. Sometimes a temporary restart clears up temporary conflicts. After restarting, relink your devices methodically. If the problem returns after re-enabling tethering, you've confirmed the conflict. The best long term solution is to set a unique private IP scheme. Try using 10.0.0.x, so it no longer overlaps with your phone's default range. This way, your home and mobile networks operate in parallel.