*** ./uip/mhlsbr.c.ORIG	Tue Jan  8 18:17:06 2013
--- ./uip/mhlsbr.c	Tue Jan  8 18:17:31 2013
***************
*** 1520,1525 ****
--- 1520,1529 ----
  # include <arpa/inet.h>
  #endif
  
+ #if (defined(_AIX51) || defined(_AIX52) || defined(_AIX53)) && !(defined(_AIX61))
+ #define ss_family __ss_family
+ #endif
+ 
  static int
  doface (struct mcomp *c1)
  {