"ARP conflict" Linux suppresses ARP notification

"ARP conflict" Linux suppresses ARP notification

When using LVS, it is usually necessary to use a virtual IP at the Lo port, where 2 places need to be adjusted:

Arp_ignore

Arp_announce

Because multiple IPs are used to a physical NIC, the Mac,arp will broadcast on the LAN saying:

"IP is 192.168.1.1 's MAC address", there will be more than one host response.

170.328160000elitegro_1f:10:5fbroadcastarp60who has 192.168.1.1? Tell 192.168.1.148

This is usually done by:

Echo 1 >/proc/sys/net/ipv4/conf/all/arp_ignoreecho 2 >/proc/sys/net/ipv4/conf/all/arp_announceecho 1 >/proc /sys/net/ipv4/conf/lo/arp_ignoreecho 2 >/proc/sys/net/ipv4/conf/lo/arp_announce

The question is:

Lo not included in all?

Personal understanding is:

The ARP behavior of all this global port is first suppressed, then the LO port is specified

For questions about LVS and ARP, you can refer to network articles here, for example:

Http://blog.chinaunix.net/uid-24960107-id-193084.html

"ARP conflict" Linux suppresses ARP notification