diff -c ping6.c.orig ping6.c
*** ping6.c.orig	2008-09-02 09:29:30.000000000 -0400
--- ping6.c	2008-09-02 09:36:06.000000000 -0400
***************
*** 727,732 ****
--- 727,733 ----
  		mhdr.msg_namelen = sizeof(struct sockaddr_in6);
  		mhdr.msg_iov = &iov;
  		mhdr.msg_iovlen = 1;
+ 		mhdr.msg_flags = 0;
  		mhdr.msg_control = cmsgbuf;
  		mhdr.msg_controllen = cmsglen;