Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread james machado
The real problem is there are distinct use cases for both SLAAC and DHCPv6 and the people in charge of DHCPv6 keep screwing up. It should be possible to run either SLAAC/RA or DHCPv6 and have each offering provide the required information without having to run additional services just to get

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Lorenzo Colitti
On Wed, Apr 1, 2020 at 4:03 AM Gert Doering wrote: > (What they *want* is "IPAM shows what IPv6 address is in use on which > device in the network", which DHCPv6 would do nicely, including > static assignments via DHCP reservations - while everything else > relies on "IPv6/MAC ND logging on the

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread indrules
Unsubscribe > On Mar 31, 2020, at 5:34 PM, Brian E Carpenter > wrote: > > On 31-Mar-20 23:17, Mark Tinka wrote: >> >> >>> On 31/Mar/20 12:09, sth...@nethelp.no wrote: >>> >>> Note that there have been multiple requests for DHCPv6 to do this but >>> every attempt has been shot down. >> >>

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Brian E Carpenter
On 31-Mar-20 23:17, Mark Tinka wrote: > > > On 31/Mar/20 12:09, sth...@nethelp.no wrote: > >> Note that there have been multiple requests for DHCPv6 to do this but >> every attempt has been shot down. > > Yep - thankfully, we have an option. > > Operating two address assignment protocols is

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Fernando Gont
On 31/3/20 16:03, Gert Doering wrote: Hi, On Tue, Mar 31, 2020 at 03:10:50PM -0300, Fernando Gont wrote: So, managed networks tend to like DHCPv6 (DNS!), and wonder how they should cope with Android. Probably they don't. I'm working with one enterprise right now, and one of the options on

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Gert Doering
Hi, On Tue, Mar 31, 2020 at 03:10:50PM -0300, Fernando Gont wrote: > > So, managed networks tend to like DHCPv6 (DNS!), and wonder how they > > should cope with Android. > Probably they don't. I'm working with one enterprise right now, and one of the options on the table is "have a separate wifi

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Fernando Gont
On 31/3/20 12:59, Gert Doering wrote: Hi, On Tue, Mar 31, 2020 at 02:30:46AM +0200, Roger Wiklund wrote: When I read DHCPv6 vs SLAAC it often boils down to "control" but I don't see the need to allocate a dynamic address if the autogenerated are used. "control" in the sense of "the

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Fernando Gont
On 31/3/20 07:09, sth...@nethelp.no wrote: When I read DHCPv6 vs SLAAC it often boils down to "control" but I don't see the need to allocate a dynamic address if the autogenerated are used. For client's you dont really have any inbound connections unless it's a support case. What's your view on

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread James R Cutler
Golly whiz, I have always considered DHCPv6 and RA/SLAAC as configuration tools for end systems. In addition, I have always considered the configuration of end systems to be the (implicit)) responsibility of the end system owner, not the network provider. I would love to find someone who could

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Gert Doering
Hi, On Tue, Mar 31, 2020 at 12:17:44PM +0200, Mark Tinka wrote: > At my house, I don't even bother with DHCPv6 for DNS. I just use the > IPv4 ones and let SLAAC assign IPv6 addresses to my devices. Just about > done with the purist madness around this. "In da house", mDNS usually does the trick

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread ignatios
On Tue, Mar 31, 2020 at 02:30:46AM +0200, Roger Wiklund wrote: >Hi >I played around with IPv6 on my Mac today (Mac OS Catalina) and I noticed >that besides the IP from DHCPv6 (dynamic) it's also generating two other >addresses. [...] >I don't really know that the "secured"

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Roger Wiklund
Thanks for all the feedback I also run dual stack with SLAAC for IPv6 assignment and my IPv4 DNS servers resolve the records. After skimming through rfc7217 + rfc4941 with the "autoconf temporary" being used for outbound and "autoconf secured" being static and can thus be used for reliable

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Mark Tinka
On 31/Mar/20 12:09, sth...@nethelp.no wrote: > Note that there have been multiple requests for DHCPv6 to do this but > every attempt has been shot down. Yep - thankfully, we have an option. Operating two address assignment protocols is just silly. At my house, I don't even bother with

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Mark Tinka
On 31/Mar/20 02:30, Roger Wiklund wrote: > > > When I read DHCPv6 vs SLAAC it often boils down to "control" but I > don't see the need to allocate a dynamic address if the autogenerated > are used. For client's you dont really have any inbound connections > unless it's a support case. > >

Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

2020-03-31 Thread Tim Chown
There are also devices that will try DHCPv6 regardless of the M/O bits. My HP printer was one. Tim On 31 Mar 2020, at 04:29, Brian E Carpenter mailto:brian.e.carpen...@gmail.com>> wrote: It seems that the router must be setting both the A bit (use SLAAC) and the M bit (use DHCPv6). So the