dhcpcd-discuss

Please double check if DHCPD disables DAD

Dusan

> -----Original Message-----
> From: Nico Schottelius <nico.schottelius@xxxxxxxxxxx>
> Sent: Thursday, January 2, 2020 7:37 AM
> To: Roy Marples <roy@xxxxxxxxxxxx>
> Cc: dhcpcd-discuss@xxxxxxxxxxxx
> Subject: Re: Tentative global IPv6 addresses with 8.1.4
> 
> 
> Good morning,
> 
> I am not sure whether this is related to dhcpcd at all. I have killed dhcpcd and
> rely purely on the RAs in the network and kernel autoconfiguration on 5.4.5
> and 5.4.6.
> 
> The behaviour is identical. I posted about it to netdev@vger, however did
> not yet get a reply.
> 
> Best regards,
> 
> Nico
> 
> Roy Marples <roy@xxxxxxxxxxxx> writes:
> 
> > On 01/01/2020 13:52, Nico Schottelius wrote:
> >>
> >> Update:
> >>
> >> On 5.4.7-arch1-1 the address also stays tentative for quite some time
> >> (minutes?) but eventually transits into regular state:
> >>
> >> 2: wlp0s20f3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> noqueue state UP group default qlen 1000
> >>      link/ether 24:ee:9a:54:c3:bf brd ff:ff:ff:ff:ff:ff
> >>      inet6 2a0a:e5c0:10:bee:5fe8:6d2:b19a:3e8f/64 scope global dynamic
> mngtmpaddr noprefixroute
> >>         valid_lft 86357sec preferred_lft 14357sec
> >>      inet6 fe80::e00d:528:9af3:e20a/64 scope link
> >>         valid_lft forever preferred_lft forever
> >>
> >> I wonder if something is broken with the DAD mechanism on these
> >> kernels. I'll try to capture the MLD/icmp6 messages next time I
> >> connect to that network.
> >
> > I still can't replicate this very easily, but does this patch fix it?
> > https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__roy.marples.name_
> > cgit_dhcpcd.git_commit_-3Fh-3Ddhcpcd-2D8-26id-
> 3D114870290a8d3d696bc404
> >
> 9c32eef3eed03d6070&d=DwIBAg&c=BFpWQw8bsuKpl1SgiZH64Q&r=UT3Bk9
> cbLeaJxhf
> >
> 3iCrhIoUWB8YLZU23029sMQGQ2kY&m=DhgL1rMtrSNyhZo2wGM4zgKWNUU
> BMPqgM9PEhm2
> > ph00&s=7NugqX0PeTtvE1nhx4ArnagrZhAJW6HaPm0d3uMizrw&e=
> >
> > Roy
> 
> 
> --
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