/usr/share/robustirc/bridge-motd.txt is in robustirc-bridge 1.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | ─────────────────────────────────────────────────────────────────
You connected to a public RobustIRC bridge.
BY NOT RUNNING A BRIDGE ON THE SAME MACHINE AS YOUR IRC CLIENT,
YOU DONT GET TRANSPARENT HANDLING OF NETWORK CONNECTION FAILURES.
Please run your own bridge instead. For instructions, see
http://robustirc.net/
─────────────────────────────────────────────────────────────────
|