If you believe that, you clearly haven't had to work with mosh in a heavily firewalled environment.
Filtering inbound UDP on one side is usually enough to break mosh, in my experience. Maybe they use better NAT traversal strategies since I last checked, but there's usually no workaround if at least one network admin involved actively blocks it.
Filtering inbound UDP on one side is usually enough to break mosh, in my experience. Maybe they use better NAT traversal strategies since I last checked, but there's usually no workaround if at least one network admin involved actively blocks it.