-U:无理由的（强制的）ARP模式去更新别的主机上的ARP CACHE列表中的本机的信息,不需要响应。

[root@openEuler ~]# ping 9.82.207.145
PING 9.82.207.145 (9.82.207.145) 56(84) bytes of data.
64 bytes from 9.82.207.145: icmp_seq=1 ttl=64 time=0.930 ms
64 bytes from 9.82.207.145: icmp_seq=2 ttl=64 time=0.307 ms

--- 9.82.207.145 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1014ms
rtt min/avg/max/mdev = 0.307/0.618/0.930/0.311 ms
[root@openEuler ~]# arping 9.82.207.145 -U -c 1
ARPING 9.82.207.145 from 9.82.211.86 enp3s0
Unicast reply from 9.82.207.145 [52:54:00:ED:21:67] 1.163ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)
[root@openEuler ~]# echo $?
0
[root@openEuler ~]# arping 9.82.207.145 -c 2
ARPING 9.82.207.145 from 9.82.211.86 enp3s0
Unicast reply from 9.82.207.145 [52:54:00:ED:21:67] 1.173ms
Unicast reply from 9.82.207.145 [52:54:00:ED:21:67] 0.770ms
Sent 2 probes (1 broadcast(s))
Received 2 response(s)
[root@openEuler ~]#

-U:无理由的（强制的）ARP模式去更新别的主机上的ARP CACHE列表中的本机的信息,不需要响应。

已推到社区
https://github.com/iputils/iputils/issues/298

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iputils 问题，不是 kernel 问题。

该问题已经通过此pr进行合入：https://gitee.com/src-openeuler/iputils/commit/aa367b3468f08289f7c7361b4fae3330a6dba474
测试结果图如下，采用-U无返回值：
输入图片说明

GVP openEuler / kernel

内容风险标识

【20.03】【iputils】arping -U强制同步模式下，预期不需要返回值，但是openeuler返回了MAC地址

-U:无理由的（强制的）ARP模式去更新别的主机上的ARP CACHE列表中的本机的信息,不需要响应。

评论 (3)

GVPopenEuler / kernel

内容风险标识

【20.03】【iputils】arping -U强制同步模式下，预期不需要返回值，但是openeuler返回了MAC地址

-U:无理由的（强制的）ARP模式去更新别的主机上的ARP CACHE列表中的本机的信息,不需要响应。

评论 (3)

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GVP openEuler / kernel