addrmerge
m_uaddr = addrmerge(svc_getrpccaller(xprt), s_uaddr, c_uaddr, netid);
addrmerge(&tbuf, rbl->rpcb_map.r_addr, NULL, nconf->nc_netid);
m_uaddr = addrmerge(caller, rbl->rpcb_map.r_addr, NULL,
char *addrmerge(struct netbuf *caller, char *serv_uaddr, char *clnt_uaddr,