Drop COMPAT_INET4 support
Detail: Fill in a missed sockaddr length in gwroute/startup.c, cater for varying ifconf entry size. Admin: Use agnostic TCPIPLibs: include path so CI works. Submission for TCP/IP bounty.
Detail: Fill in a missed sockaddr length in gwroute/startup.c, cater for varying ifconf entry size. Admin: Use agnostic TCPIPLibs: include path so CI works. Submission for TCP/IP bounty.