ターミナル１ %./server_i 6000 ターミナル２ %./client_i nw0543.st.ie.u-ryukyu.ac.jp 6000 trying 133.13.59.43 port 6000 Hello ::ffff:133.13.59.43 %./client_i 2001:02f8:001c:d048:0211:24ff:fe90:f22e 6000 trying 2001:02f8:001c:d048:0211:24ff:fe90:f22e port 6000 Hello 2001:02f8:001c:d048:0211:24ff:fe90:f22e