| Issue | Fix | |-------|-----| | Bridge mode reverts after reboot | Use Telnet: sendcmd 1 DB set WANC 0 Enable 0 | | VLAN not sticking | Flash bridge-only firmware (link in comments) | | Double NAT despite bridge | Ensure SIP/ALG is disabled under Security → Firewall |
Enabling deactivates the routing functions of the ZTE F689. The gateway passes the public IP address directly to your private router, turning the ZTE unit into a pure fiber modem. Prerequisites Before Configuration zte f689 bridge mode exclusive
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