[Dnsmasq-discuss] RA-acquired address not marked as 'dynamic' with 2.82

[Iain Lane]

Hi,

In Ubuntu we started seeing failures of NetworkManager's tests when we 
updated to dnsmasq 2.82 (from the Debian package; thanks Simon for 
maintaining this). Search for 'Regex didn't match' in:

  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-groovy/groovy/amd64/n/network-manager/20200903_200241_5f5fd@/log.gz

and you can work out after a bit of squinting that it's because the 
kernel is saying the address isn't 'dynamic' any more.

I did a bit of manual testing in a VM (spawning LXD containers which get 
IPs from dnsmasq running on the host) and managed to reproduce this 
change:

dnsmasq 2.81:
    inet6 fd42:d287:488a:d7e8:216:3eff:fecb:d41b/64 scope global dynamic mngtmpaddr noprefixroute 

dnsmasq 2.82:
    inet6 fd42:d287:488a:d7e8:216:3eff:fecb:d41b/64 scope global mngtmpaddr noprefixroute 

Was this intentional and is it actually a problem? i.e. I'm wondering if 
we should update the tests to not check for 'dynamic', or if a fix in 
dnsmasq is needed instead.

Cheers,

-- 
Iain Lane                                  [ iain at orangesquash.org.uk ]
Debian Developer                                   [ laney at debian.org ]
Ubuntu Developer                                   [ laney at ubuntu.com ]
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