netpath_chain
struct netpath_chain *chainp; /* holds chain of ncp's we alloc */
chainp = (struct netpath_chain *) /* cobble alloc chain entry */
malloc(sizeof (struct netpath_chain));
struct netpath_chain *chainp, *lastp;
struct netpath_chain *nchain_next; /* next nconf entry allocated */
struct netpath_chain *ncp_list; /* list of nconfs allocated this session*/