Describe the bug
On Windows Server 2025 and Windows 11 in a container with process isolation TCP test fails and it's unable to access any web page or download any files.

To Reproduce
Steps to reproduce the behavior:
Run the container with process isolation:

> docker run -it --rm --isolation process mcr.microsoft.com/windows/servercore:ltsc2025 powershell

Test connection

> Test-NetConnection -Port 
WARNING: TCP connect to (13.107.4.52 : 80) failed 
ComputerName : internetbeacon.msedge.net
RemoteAddress : 13.107.4.52
RemotePort : 80
InterfaceAlias : vEthernet (Ethernet)
SourceAddress : 172.29.72.49
PingSucceeded : True
PingReplyDetails (RTT) : 35 ms
TcpTestSucceeded : False

Expected behavior
Tcp test succeeds:

> Test-NetConnection -Port 80 ComputerName : internetbeacon.msedge.net
RemoteAddress : 13.107.4.52
RemotePort : 80
InterfaceAlias : Ethernet
SourceAddress : 172.29.69.143
TcpTestSucceeded : True

Configuration:

• Edition: tested on both Microsoft Windows 11 Pro 10.0.26200, Microsoft Windows Server 2025 Standard 10.0.26100
• Base Image being used: mcr.microsoft.com/windows/servercore:ltsc2025
• Container engine: docker
• Container Engine version: 28.5.1

Additional context

• It's the same docker image and the same docker network, the only difference is the isolation type, and with hyperv isolation tcp test succeeds.
• Ping and TRACERT commands shows no issues
• Disabling Firewall on the host didn't help
• Also I've tried to disable NetAdapterRSC according to this issue without success
• Sniffing traffic with wireshark on the host didn't show anything except ARP and DNS packets