diff -urNp net-snmp-5.7.3/snmplib/snmp_transport.c net-snmp-5.7.3.new/snmplib/snmp_transport.c
--- net-snmp-5.7.3/snmplib/snmp_transport.c	2014-12-08 21:23:22.000000000 +0100
+++ net-snmp-5.7.3.new/snmplib/snmp_transport.c	2016-08-12 13:04:35.438583586 +0200
@@ -594,12 +594,13 @@ netsnmp_tdomain_transport_full(const cha
                 int commas = 0;
                 const char *cp = default_domain;
                 char *dup = strdup(default_domain);
+                char *ptr = NULL;
 
                 while (*++cp) if (*cp == ',') commas++;
                 lspec = calloc(commas+2, sizeof(char *));
                 commas = 1;
-                lspec[0] = strtok(dup, ",");
-                while ((lspec[commas++] = strtok(NULL, ",")))
+                lspec[0] = strtok_r(dup, ",", &ptr);
+                while ((lspec[commas++] = strtok_r(NULL, ",", &ptr)))
                     ;
                 spec = (const char * const *)lspec;
             }