Author: James Morris <jmorris@intercode.com.au>
Status: Beta

This patch adds CONFIG_IP_NF_NAT_SNMP_BASIC for basic SNMP NAT
support.  This is the "basic" form of SNMP-ALG, as described in 
RFC 2962; it works by modifying IP addresses inside SNMP payloads
to match IP-layer NAT mapping.
