Battlefield 6 disconnects my entire network/internet; reproducible 100%

Battlefield 6 crashes during server join with network traffic dropping to 0 KB/s immediately before crash (PC, Windows, Xfinity)

Video of the Crash

Summary
Battlefield 6 launches normally but consistently crashes during server join or immediately after brief loading visuals. The failure is always preceded by the in-game network graph dropping to 0 KB/s inbound and outbound. This is not a full internet disconnect. Other applications and network activity remain stable. I am normally connected via LAN directly to my modem, have 300 hours so far of uninterrupted gameplay. I tested LAN, WiFi, Hotspot, and my neighbors WiFi with the same outcome as the video above.

Environment
PC running Windows
Network using Xfinity gateway/router managed via the Xfinity app
Static DHCP-reserved LAN IP assigned to the PC: 10.0.0.37
Tools used include the Battlefield in-game network graph, Windows Event Viewer, and external port checking tools

Symptoms and reproduction
Launch Battlefield 6
Attempt to join any server or match
During loading, the game either crashes on the loading screen or briefly loads (for example helicopter visuals) and then crashes
Immediately before the crash, the in-game network graph shows traffic activity and then drops to 0 KB/s in and out

Observed example
Attempted to join a server (example: Redsec). The helicopter/loading visuals appeared briefly, then the game terminated immediately. The in-game network graph showed traffic followed by a complete flatline to zero just before the crash.

Event Viewer findings
Windows Event Viewer was reviewed to determine whether Windows was disabling the network connection at the moment of failure.

Result: There is no clear or actionable Windows network-level error logged at the exact time of the crash. There is no indication of a clean network adapter disconnect. The behavior appears consistent with the game or EA Anti-Cheat terminating the session or process internally rather than Windows dropping connectivity.

Event Viewer logs from the Application and System logs around the crash window can be provided if specific fields or Event IDs are required.

Troubleshooting performed

Static IP and port forwarding
A static LAN IP was reserved for the PC using DHCP reservation to prevent address changes (10.0.0.37).
Port forwarding was configured through the Xfinity app, including port 27015.
External port checking tools report the public IP and port as closed.

Result: No change. Battlefield 6 still crashes during server join. Port forwarding did not resolve the issue.

Windows Firewall changes
Windows Defender Firewall rules were deleted to rule out local firewall interference.

Result: The game began crashing earlier, now during the loading screen. This suggests the firewall was not the root cause and that removing rules may have removed previously allowed behavior or altered timing rather than fixing the issue.

Network observability attempts
Windows-native tools were used to determine what component was disabling Battlefield network traffic.

Result: No Windows-level logging clearly explains the sudden drop of Battlefield traffic to zero. This points toward an application-level or anti-cheat-level termination rather than an OS-level network failure.

Community reports and possible correlation
Community posts were found suggesting EA Anti-Cheat may conflict with PPPoE or dial-up style connections, with reported workarounds involving disconnecting and reconnecting the connection after launching the game. This is not confirmed as the root cause here, but the failure pattern is similar: network handshake fails, traffic drops to zero, game terminates.

Why this does not appear to be general connectivity or user error
Other online games and internet usage function normally
Network traffic drops only for Battlefield 6, not system-wide
Static IP, port forwarding, and firewall changes do not resolve the issue
Windows does not log a clean network disconnect at the time of failure
The crash consistently follows the Battlefield network traffic dropping to zero

Request to EA Support and Engineering
Confirm whether Battlefield 6 requires inbound reachable ports for stability or if outbound-only connectivity is expected
Provide guidance on EA Anti-Cheat logging or diagnostics that can explain why the session is terminated when network traffic drops
Confirm whether this is a known issue with certain ISP gateways (including Xfinity) and provide recommended gateway settings, bridge mode guidance, or an official workaround

Evidence available upon request
Screenshots showing in-game network traffic dropping to 0 KB/s immediately before crash
Screenshots of Xfinity port forwarding configuration and port checker results
Windows Event Viewer logs around the crash window

Short issue summary for ticket title
Battlefield 6 crashes during server join. In-game network traffic drops to 0 KB/s immediately before crash. Xfinity gateway, static IP 10.0.0.37, port forwarding attempted, firewall changes worsened crash, no clear Windows network error logged.