This one is not under _KERNEL but it's used at only one place and if a port use it, it should probably define it by itself.
ok? Index: netinet/if_ether.c =================================================================== RCS file: /home/ncvs/src/sys/netinet/if_ether.c,v retrieving revision 1.111 diff -u -p -r1.111 if_ether.c --- netinet/if_ether.c 11 Nov 2013 09:15:34 -0000 1.111 +++ netinet/if_ether.c 20 Nov 2013 09:02:33 -0000 @@ -868,8 +868,8 @@ arp_ifinit(struct arpcom *ac, struct ifa /* Warn the user if another station has this IP address. */ arprequest(&ac->ac_if, - &(IA_SIN(ifa)->sin_addr.s_addr), - &(IA_SIN(ifa)->sin_addr.s_addr), + &satosin(ifa->ifa_addr)->sin_addr.s_addr, + &satosin(ifa->ifa_addr)->sin_addr.s_addr, ac->ac_enaddr); ifa->ifa_rtrequest = arp_rtrequest; ifa->ifa_flags |= RTF_CLONING; Index: netinet/in_var.h =================================================================== RCS file: /home/ncvs/src/sys/netinet/in_var.h,v retrieving revision 1.26 diff -u -p -r1.26 in_var.h --- netinet/in_var.h 23 Oct 2013 15:12:42 -0000 1.26 +++ netinet/in_var.h 20 Nov 2013 09:02:33 -0000 @@ -73,11 +73,6 @@ struct in_aliasreq { #define ifra_broadaddr ifra_dstaddr struct sockaddr_in ifra_mask; }; -/* - * Given a pointer to an in_ifaddr (ifaddr), - * return a pointer to the addr as a sockaddr_in. - */ -#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) #ifdef _KERNEL