+#ifdef LDAP_PF_INET6
+ union {
+ struct in6_addr ax6;
+ unsigned long ax;
+ } ax_peername_addr,
+ ax_peername_mask;
+#define a_peername_addr6 ax_peername_addr.ax6
+#define a_peername_addr ax_peername_addr.ax
+#define a_peername_mask6 ax_peername_mask.ax6
+#define a_peername_mask ax_peername_mask.ax
+/* apparently, only s6_addr is portable;
+ * define a portable address mask comparison */
+#define slap_addr6_mask(val, msk, asr) ( \
+ (((val)->s6_addr[0] & (msk)->s6_addr[0]) == (asr)->s6_addr[0]) \
+ && (((val)->s6_addr[1] & (msk)->s6_addr[1]) == (asr)->s6_addr[1]) \
+ && (((val)->s6_addr[2] & (msk)->s6_addr[2]) == (asr)->s6_addr[2]) \
+ && (((val)->s6_addr[3] & (msk)->s6_addr[3]) == (asr)->s6_addr[3]) \
+ && (((val)->s6_addr[4] & (msk)->s6_addr[4]) == (asr)->s6_addr[4]) \
+ && (((val)->s6_addr[5] & (msk)->s6_addr[5]) == (asr)->s6_addr[5]) \
+ && (((val)->s6_addr[6] & (msk)->s6_addr[6]) == (asr)->s6_addr[6]) \
+ && (((val)->s6_addr[7] & (msk)->s6_addr[7]) == (asr)->s6_addr[7]) \
+ && (((val)->s6_addr[8] & (msk)->s6_addr[8]) == (asr)->s6_addr[8]) \
+ && (((val)->s6_addr[9] & (msk)->s6_addr[9]) == (asr)->s6_addr[9]) \
+ && (((val)->s6_addr[10] & (msk)->s6_addr[10]) == (asr)->s6_addr[10]) \
+ && (((val)->s6_addr[11] & (msk)->s6_addr[11]) == (asr)->s6_addr[11]) \
+ && (((val)->s6_addr[12] & (msk)->s6_addr[12]) == (asr)->s6_addr[12]) \
+ && (((val)->s6_addr[13] & (msk)->s6_addr[13]) == (asr)->s6_addr[13]) \
+ && (((val)->s6_addr[14] & (msk)->s6_addr[14]) == (asr)->s6_addr[14]) \
+ && (((val)->s6_addr[15] & (msk)->s6_addr[15]) == (asr)->s6_addr[15]) \
+ )
+#else /* ! LDAP_PF_INET6 */