This is the log of my dsl 300t .
Jan 1 12:00:10> NTP Polling Timer for DHCP Started succesfully.
Jan 1 12:00:10> DSL Polling Timer Started succesfully.
Jan 1 12:00:10> Firewall NAT service started
Jan 1 12:00:12> starting on port 80
Jan 1 12:00:12> Bridge Created: br0
Jan 1 12:00:13> No Module Description from Interface Below
Jan 1 12:00:13> Bridge Created: br1
Jan 1 12:00:14> Bridge Interface Added: eth0
Jan 1 12:00:14> Bridge Interface Added: nas0
Jan 1 12:00:15> Add Bridge Iface Error: 1
Jan 1 12:00:15> Duplicate Bridge Iface: nas0
Jan 1 12:00:20> DSL Carrier is down
Jan 1 12:00:30> DSL Carrier is up
Is the message
Add Bridge Iface Error: 1 dangerous for my IT security?
The firmware is :