发给zerotier网卡的包经过包装后才发给物理网卡,所以你在物理网卡上看不到icmp报文,但是能看到其他报文
On Thu, Mar 19, 2020 at 12:33 PM 李洛 <[email protected]> wrote: > > 各位,最近在折腾内网穿透的事情并且使用过zerotier,然后有个疑问就是Linux如何通过zerotier这个虚拟网卡将报文传递出去的. > 假设某台Linux服务器为A并且仅通过一条网线与路由器相连接,假设这个物理网卡为eth0,IP地址为10.10.10.200,并且zerotier新增的虚拟网卡为eth1,IP地址为192.168.111.100(仅举例) > 此时我通过zerotier的虚拟IP去ping其他zerotier节点的IP,假设为192.168.111.101,那么我tcpdump -i > eth1抓eth1网卡时是可以看到icmp的request和reply报文的,但是我tcpdump -i > eth0这个真实的物理网卡确实看不到icmp报文的。 > 我的疑问是既然这台Linux服务器只有一个物理网卡,那么网络流量肯定是走这个物理网卡eth0出去的,但是为何tcpdump看不到这个icmp报文呢? > > > -- > All the best! > > -- > -- You received this message because you are subscribed to the Google Groups > Shanghai Linux User Group group. To post to this group, send email to > [email protected]. To unsubscribe from this group, send email to > [email protected]. For more options, visit this group at > https://groups.google.com/d/forum/shlug?hl=zh-CN > --- > 您收到此邮件是因为您订阅了Google网上论坛上的“Shanghai Linux User Group”群组。 > 要退订此群组并停止接收此群组的电子邮件,请发送电子邮件到[email protected]。 > 要在网络上查看此讨论,请访问https://groups.google.com/d/msgid/shlug/CACb3DvPenXf_BagkDYK2qHotXfrqqj6Qc0p7udo-ZuPEtZb3mg%40mail.gmail.com。 -- Liang Guo -- -- You received this message because you are subscribed to the Google Groups Shanghai Linux User Group group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at https://groups.google.com/d/forum/shlug?hl=zh-CN --- 您收到此邮件是因为您订阅了 Google 网上论坛的“Shanghai Linux User Group”群组。 要退订此群组并停止接收此群组的电子邮件,请发送电子邮件到[email protected]。 要在网络上查看此讨论,请访问 https://groups.google.com/d/msgid/shlug/CAJwrgW7RFqrczQK0%2BJU40Oyf4rPL9VzPSrgnOJzhGb9KqpRsXg%40mail.gmail.com。
