...multipath code, `rt->rt_nhop` may actually point toNo functional changes.
Most of the routing flags are stored in the netxtop instead of rtentry.
nexthop group instead of nhop. To ease transitionRename `rt->rt_flags` to `rt->rte_flags` to simplify reading/modifying code checking routing flags.
In the new multipath code, reduce the`rt->rt_nhop` may actually point to nexthop group instead of nhop.
To ease transition, reduce the amount of `rt_nhop->...` accesses.