Description of problem:
On a SLAAC network the IPv6 address goes away after sleep resume.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Close the lid of an an ethernet-connected laptop to cause to cause it
2. Open lid to resume
4. notice that the IPv6 addresses are gone.
IPv6 addresses are gone for a few minutes after resume. (They do always return after a while.)
IPv6 addresses still are present after a resume.
I only have one laptop to test against, so it might well be a timing issue with this particular ethernet chip. (laptop: 2006 AMD athlon/64 based Compaq v5005z)
Actually I was about to post the reverse problem. I have dnsmasq set to a lease time of 10 minutes.
dhcp-range=tag:br0,::1,::ffff, constructor:br0,ra-stateless,64, 10m
I do this so if a router loses it's connection in an a multi-homed network, that the hosts all know to stop trying to route to that router after 10 minutes.
But I noticed even after my laptop has been asleep for hours, the IPv6 addresses are still there after a resume. I know it hasn't reached out to the routers yet, because the IPv4 addresses are gone...
I don't know if the IPv6 address would disappear after a few minutes if the routers were turned off. But it sounds like from this "bug" report, that is exactly what would happen. Which is what I want.
In this case, I did not notice my IPv6 addresses disappearing. But then my addresses are SLAAC addresses, and maybe those have special rules.
The bug appears to be related to the Router-Solicitation / Router-Advertisement not being acted on. A beaglebone black running Debian plugged into the same ethernet gets an IPv6 assignment right away. Fedora-21 running NetworkManager needs to wait till the first unsolicited Router Advertisement before it gets its IPv6 assignment. Is NetowrkManager somehow blocking the normal in-kernel RS/RA?
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