[AGENT++] IPv4/IPv6 support for Agent++

[Neil Gendzwill]

We would like to support requests from both IPv4 and IPv6 clients in a 
dual-stack Linux environment (SL 6, if it matters).

Our current code uses the Agent++ class Snmpx, which inherits from the 
Snmp++ class Snmp.

The Snmp class allows support for IPv6 by either setting a flag in one 
of the constructors or using a constructor with two UDP addresses. From 
uxsnmp.h:

Snmp(int &status, const unsigned short port = 0, const bool bind_ipv6 = 
false);  // Source code shows this support is either/or depending on 
bind_ipv6
Snmp(int &status, const UdpAddress& 
addr);                                                        // Again, 
either/or depending on contents of addr
Snmp(int &status, const UdpAddress& addr_v4, const UdpAddress& 
addr_v6);   // This constructor supports both

However, Snmpx  only supports the first two constructors and does not 
support the dual address constructor.  It also defaults bind_ipv6 in the 
first constructor to false.  On the surface of it, seems like it 
supports only one protocol or the other.  From snmp_pp_ext.h:

Snmpx(int &status, u_short port): Snmp(status, port) {}
Snmpx(int &status, const NS_SNMP UdpAddress& addr): Snmp( status, addr) {}
// 3rd Snmp constructor unsupported

How do I set up an agent that listens to requests in either protocol?  
Or do I need two agents?

Regards,

Neil Gendzwill
SED Systems
Saskatoon, Canada