diff -u new/dns_resolv.c new.1/dns_resolv.c
--- new/dns_resolv.c	2013-02-26 05:37:27.000000000 +0000
+++ new.1/dns_resolv.c	2016-04-05 06:57:30.827715718 +0000
@@ -886,7 +886,7 @@
    /* kludge for IPv6 6to4 (RFC3056) */
    if (addr[0]==0x20 && addr[1]==0x02)
    {
-      memcpy(&addr[12],&addr[2],4);
+      memmove(&addr[12],&addr[2],4);
       memset(&addr,0,12);
    }
 
diff -u new/preserve.c new.1/preserve.c
--- new/preserve.c	2013-02-26 05:37:27.000000000 +0000
+++ new.1/preserve.c	2016-04-05 06:56:39.023080706 +0000
@@ -109,7 +109,7 @@
                         yr = hist[i].year;
                         mth= hist[i].month+1;
                         if (mth>12) { mth=1; yr++; }
-                        memcpy(&hist[0], &hist[1], sizeof(hist[0])*i);
+                        memmove(&hist[0], &hist[1], sizeof(hist[0])*i);
                         memset(&hist[i], 0, sizeof(struct hist_rec));
                         hist[i].year=yr; hist[i].month=mth; n--;
                     }
@@ -277,7 +277,7 @@
                   yr = hist[i].year;
                   mth= hist[i].month+1;
                   if (mth>12) { mth=1; yr++; }
-                  memcpy(&hist[0],&hist[1],sizeof(hist[0])*i);
+                  memmove(&hist[0],&hist[1],sizeof(hist[0])*i);
                   memset(&hist[i], 0, sizeof(struct hist_rec));
                   hist[i].year=yr; hist[i].month=mth; n--;
                }