Oh wow - I failed to notice that those two addresses were the same address in what Veronique sent.
On Fri, Dec 2, 2022 at 1:15 PM Silvester van der Leer <[email protected]> wrote: > Silvester van der Leer > 7:13 PM (0 minutes ago) > to Darren > Hi, > > I've opened the issue at gitlab and contacted veronique since the issue we > encounter is similar. > > In this case both IA_ADDR's IP's are the same, one with correct lifetime, > and one with zero lifetime, which may cause the client to glitch (which > happens in my case) > > > On Fri, Dec 2, 2022 at 3:35 PM Darren Ankney <[email protected]> > wrote: > >> https://www.rfc-editor.org/rfc/rfc3315#section-22.6 >> >> "In a message sent by a server to a client, the client MUST use the >> values in the preferred and valid lifetime fields for the preferred >> and valid lifetimes." >> >> I believe that the server is telling the client to not use the address >> with the 0 length lifetime and instead use the other address. Have a >> look at the client messages and see if both IPs are listed or perhaps >> only the IP that the server is sending 0 for is listed in the IANA. >> >> On Fri, Dec 2, 2022 at 9:27 AM Veronique Lefebure >> <[email protected]> wrote: >> > >> > For people who would encounter the same issue, see >> https://gitlab.isc.org/isc-projects/kea/-/issues/2660 >> > ________________________________ >> > From: Kea-users <[email protected]> on behalf of >> Veronique Lefebure <[email protected]> >> > Sent: Thursday, January 27, 2022 3:31 PM >> > To: [email protected] <[email protected]> >> > Subject: [Kea-users] KEA sends valid-lifetime = 0 >> > >> > >> > Hi, >> > >> > For the following query: >> > >> > 16:24:15.730401 IP6 (hlim 1, next-header UDP (17) payload length: 143) >> > cs-lab11-kea.dhcpv6-client > ff02::1:2.dhcpv6-server: >> > [bad udp cksum 0xc2bb -> 0xa8e1!] >> > dhcp6 renew (xid=50bedb >> > (client-ID type 4) >> > (server-ID hwaddr/time type 1 time 692127779 00259074ca68) >> > (option-request DNS-server DNS-search-list DNS-server DNS-search-list >> client-ID) >> > (elapsed-time 0) (Client-FQDN) >> > (IA_NA IAID:795336567 T1:3600 T2:5400(IA_ADDR xxxx::101:1 pltime:7200 >> vltime:7500)) >> > ) >> > >> > I have observed a case where KEA dhcp6 returns the following: >> > >> > 16:24:16.359170 IP6 (hlim 64, next-header UDP (17) payload length: 171) >> > gateway.dhcpv6-server > cs-lab11-kea.dhcpv6-client: >> > [udp sum ok] >> > dhcp6 reply (xid=50bedb >> > (client-ID type 4) >> > (server-ID hwaddr/time type 1 time 692127779 00259074ca68) >> > (IA_NA IAID:795336567 T1:40 T2:100 >> > (IA_ADDR xxxx::101:1 pltime:120 vltime:120) >> > (IA_ADDR xxxx::101:1 pltime:0 vltime:0)) >> > (DNS-search-list cern.ch.) (Client-FQDN)) >> > >> > Where there are 2 IA_ADDR, the second one having a vltime of 0. >> > >> > Any idea how that can happen ? >> > >> > wireshark shows this: >> > >> > [...] >> > Message type: Reply (7) >> > Transaction ID: 0x52a6e8 >> > Client Identifier >> > Server Identifier >> > Identity Association for Non-temporary Address >> > Option: Identity Association for Non-temporary Address (3) >> > Length: 68 >> > xxx >> > IAID: 2f67df77 >> > T1: 40 >> > T2: 100 >> > IA Address >> > Option: IA Address (5) >> > Length: 24 >> > Value: xxxx10100010000007800000078 >> > IPv6 address: 2001:1458:202:1d5::101:1 (xxxx::101:1) >> > Preferred lifetime: 120 >> > Valid lifetime: 120 >> > IA Address >> > Option: IA Address (5) >> > Length: 24 >> > Value: xxxx10100010000000000000000 >> > IPv6 address: 2001:1458:202:1d5::101:1 (xxxx::101:1) >> > Preferred lifetime: 0 >> > Valid lifetime: 0 >> > Domain Search List >> > Fully Qualified Domain Name >> > >> > Thanks, >> > Veronique >> > -- >> > ISC funds the development of this software with paid support >> subscriptions. Contact us at https://www.isc.org/contact/ for more >> information. >> > >> > To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. >> > >> > Kea-users mailing list >> > [email protected] >> > https://lists.isc.org/mailman/listinfo/kea-users >> -- >> ISC funds the development of this software with paid support >> subscriptions. Contact us at https://www.isc.org/contact/ for more >> information. >> >> To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. >> >> Kea-users mailing list >> [email protected] >> https://lists.isc.org/mailman/listinfo/kea-users >> > > > -- > And there was silence >
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