/usr/include/bits/in.h:153:struct ip_mreqn /usr/src/kernels/3.10.0-1062.el7.x86_64/include/linux/igmp.h:62: struct ip_mreqn multi; /usr/src/kernels/3.10.0-1062.el7.x86_64/include/linux/igmp.h:113:extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr); /usr/sr...