#安装ip-neigh
opkg update
opkg install ip-full

#查询IPV6 
ip -6 neigh show

#查询IPV4
ip -4 neigh show

#例如
ip -6 neigh show | grep 00:00:00:5a:9f:cb
ip -4 neigh show | grep 00:00:00:5a:9f:cb

#多线多拨获得指定前缀：grep -E ;只输出一个 head -n 1  ；输出第2个 sed -n '2p'
ip -6 neigh show | grep '00:00:00:5a:9f:cb' | grep -E '2409|240e' | head -n 1  | sed -n '2p'

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