MacBook은 기내 Wi-Fi에 못 붙는데 휴대폰은 된다

Plane Wi-Fi holds all traffic until you sign in on the airline's page. The phone often works because nothing on it hides that page.

Applies to: All current macOS versions. The Off, Fixed and Rotating options for the private Wi-Fi address are in macOS 15 Sequoia and later.확인일: 2026년 10월 29일

증상

The Mac joins the plane's network, but no sign-in page opens.
Safari shows a security warning or a blank page. The phone signed in with no problems.
The Mac was online, then the airline's page asks you to sign in or pay again.
The airline's page says that your pass is in use on another device.

가능한 원인

A VPN or iCloud Private Relay. A VPN or Private Relay can stop the plane network from sending you to its sign-in page.
Custom or encrypted DNS. A custom DNS server or a DNS profile does not use the plane's DNS. The network then cannot redirect you to its sign-in page.
A new private Wi-Fi address. The plane network can link a pass to the Wi-Fi address of a device. A new private address makes the Mac look like a new device.
The phone signed in another way. The phone can have signed in through the airline's app, or before the Mac joined. It often has no VPN or DNS profile either.
The airline's own setup. Airlines and their Wi-Fi providers use different sign-in pages and rules. Some show the page only after take-off. Some ask you to use their app.

확인 방법

Hold the Option key and click the Wi-Fi icon. Make sure that you are on the airline's network.
Wi-Fi 서비스의 DNS 서버를 표시합니다. 사용자 설정 서버도 여기에 표시됩니다.
```
networksetup -getdnsservers Wi-Fi
```
Output There aren't any DNS Servers set on Wi-Fi. means that the Mac uses the plane's DNS.
서비스 순서의 맨 위에서 VPN을 찾으세요.
```
networksetup -listnetworkserviceorder
```
DNS 프로파일을 찾으세요. macOS 15 이상에서는 Apple 메뉴 > 시스템 설정 > 일반 > 기기 관리를 선택하세요.
macOS 13 및 14에서는 Apple 메뉴 > 시스템 설정 > 개인정보 보호 및 보안 > 프로파일을 선택하세요.
Choose Apple menu > System Settings > Wi-Fi. Click Details next to the plane's network.
Read the values of Private Wi-Fi address and Limit IP address tracking.

해결 방법

Turn off the VPN until you are signed in. Also pause its kill switch, if it has one.
If the sign-in page does not appear, forget the network first. Then join it again from the Wi-Fi menu.
Forgetting the network removes its settings. Do it before the next steps, not after.
In the network's Details, turn off Limit IP address tracking. This also turns off Private Relay for that network.
Set Private Wi-Fi address to Fixed before you buy or redeem a pass. Do not change it after that.
If you use custom DNS, remove it for a short time.
```
sudo networksetup -setdnsservers Wi-Fi empty
```
관리자 암호가 필요합니다.
If a DNS profile is installed, remove it for the flight. Install it again after you land.
브라우저에서 https가 아닌 http를 사용하는 페이지를 엽니다. 예를 들어 http://captive.apple.com을 엽니다.
Sign in, or buy or redeem the pass, on the airline's page. Use the address only if the airline gives it.
If the pass is in use on the phone, log out there first, if the airline's page allows it.
After you sign in, turn on the VPN, Private Relay and your DNS again.

Kilobat 사용

Check for a sign-in page with Kilobat's diagnosis.
```
kilobat diagnose --json
```
출력 네트워크에서 로그인을 요구하면 measurements.captivePortal은 true입니다.
Show the address of the sign-in page that the network sent Kilobat's check to.
```
kilobat portal
```
Output When a sign-in page is in the way, it prints its address. kilobat portal open opens it in your browser.
Kilobat으로 DNS를 설정했다면 로그인할 때 네트워크의 DNS로 되돌리세요.
```
kilobat dns automatic
```
DNS를 변경하려면 관리자 암호가 필요합니다.
For the provider, the price and how to connect on your airline, see In-flight Wi-Fi by airline.

질문

Why does my phone work when the Mac does not?

The phone often signed in first, or through the airline's app. It also often has no VPN, custom DNS or DNS profile.

What is the address of my airline's sign-in page?

It differs by airline and Wi-Fi provider. Use the address only when the airline publishes it. Otherwise open http://captive.apple.com.

기내 Wi-Fi에서 VPN을 사용할 수 있나요?

Turn it on only after you sign in. Airline rules for VPNs differ, and many airlines do not publish one.

Why do I have to pay again after I changed a setting?

The network can link the pass to the Wi-Fi address. A new private address or a forgotten network can look like a new device.

출처

Apple Developer 뉴스: 캡티브 네트워크를 현대화하는 방법(2020년 6월 22일)
Apple 지원: Apple 기기에서 개인 Wi-Fi 주소 사용하기
Apple 지원: 특정 웹사이트, 네트워크 또는 시스템 설정에 대한 iCloud 비공개 릴레이 관리하기
Apple 지원: Mac에서 DNS 설정 변경하기
Apple 지원: Mac이 Wi-Fi로 인터넷에 연결되지 않는 경우
networksetup(8), macOS 27.2와 함께 설치된 매뉴얼 페이지

2026년 10월 29일 확인했습니다.