Bug 194879
Summary: | arp_notify does not send grace ARP on ip address add | ||
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Product: | Networking | Reporter: | George Shuklin (george.shuklin) |
Component: | IPV4 | Assignee: | Stephen Hemminger (stephen) |
Status: | RESOLVED WILL_NOT_FIX | ||
Severity: | low | CC: | evg |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | 4.11 | Subsystem: | |
Regression: | No | Bisected commit-id: |
Description
George Shuklin
2017-03-14 11:02:21 UTC
Here example of userspace bug which could be prevented if this fix applied: https://bugs.launchpad.net/neutron/+bug/1672433 Linux kernel does uses a weak binding between addresses and interfaces, plus there are other sysctl's controlling arp behavior. A patch to change current behavior when value is 1 is unlikely to be accepted. You might get a patch accepted that adds a third state (value = 2) but it would be complex since with weak host model it is not easy to do. |