ipmp_illgrp_lookup_arpent
extern ipmp_arpent_t *ipmp_illgrp_lookup_arpent(ipmp_illgrp_t *, ipaddr_t *);
while ((entp = ipmp_illgrp_lookup_arpent(illg, NULL)) != NULL)
entp = ipmp_illgrp_lookup_arpent(illg, &ipif->ipif_lcl_addr);
if ((oentp = ipmp_illgrp_lookup_arpent(illg, &entp->ia_ipaddr)) != NULL)