Merge pull request ARMmbed#10842 from ghseb/cellular-stack-type-fixes

Cellular: Stack type fixes

Author: 0xc0170

features/cellular/framework/AT/AT_CellularContext.cpp

@@ -378,9 +378,8 @@ bool AT_CellularContext::get_context()
                 // APN matched -> Check PDP type
                 pdp_type_t pdp_type = string_to_pdp_type(pdp_type_from_context);
 
-                // Accept exact matching PDP context type or dual PDP context for IPv4/IPv6 only modems
-                if (get_property(pdp_type_t_to_cellular_property(pdp_type)) ||
-                        ((pdp_type == IPV4V6_PDP_TYPE && (modem_supports_ipv4 || modem_supports_ipv6)) && !_nonip_req)) {
+                // Accept exact matching PDP context type
+                if (get_property(pdp_type_t_to_cellular_property(pdp_type))) {
                     _pdp_type = pdp_type;
                     _cid = cid;
                 }

features/cellular/framework/targets/GEMALTO/CINTERION/GEMALTO_CINTERION_CellularStack.cpp

@@ -290,8 +290,9 @@ nsapi_size_or_error_t GEMALTO_CINTERION_CellularStack::socket_sendto_impl(Cellul
 {
     if (socket->proto == NSAPI_UDP) {
         const int ip_version = address.get_ip_version();
-        if ((ip_version == NSAPI_IPv4 && _stack_type != IPV4_STACK) ||
-                (ip_version == NSAPI_IPv6 && _stack_type != IPV6_STACK)) {
+        if (_stack_type != IPV4V6_STACK &&
+                ((ip_version == NSAPI_IPv4 && _stack_type != IPV4_STACK) ||
+                 (ip_version == NSAPI_IPv6 && _stack_type != IPV6_STACK))) {
             tr_warn("No IP route for %s", address.get_ip_address());
             return NSAPI_ERROR_NO_SOCKET;
         }