多选题关于BGP的Next Hop属性。描述正确的是（）A必须存在于Update报文中B不一定就是邻居设备的IP地址CUpdate报文中可以没有Next_Hop属性DBGPSpeaker在向EBGP对等体发布某条路由时，并不改变该路由信息的下一跳属性
多选题
关于BGP的Next Hop属性。描述正确的是（）
A
必须存在于Update报文中
B
不一定就是邻居设备的IP地址
C
Update报文中可以没有Next_Hop属性
D
BGPSpeaker在向EBGP对等体发布某条路由时，并不改变该路由信息的下一跳属性
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