In getAddressAsString(), we are comparing ans <=  0 to check for failure. When compiling with g++ 11.2 (Ubuntu 22.02), this gave the following error:

src/arch/linux/net_socket.cpp:170:15: error: ordered comparison of pointer with integer zero (‘const char*’ and ‘int’)

inet_ntop returns a NULL pointer for failure and non-NULL otherwise. So in order to fix this, we can simply compare ans with NULL.

A simple static cast seems to do the trick.