Re: OSPF for IPv4 over IPv6 only?

2024-04-07 Thread netravnen+birdlist
Looks like the date of the post shifted from 03-06 to 04-07, https://ipng.ch/s/articles/2024/04/07/vpp-ospf.html (Can be seen from the index page, https://ipng.ch/s/articles/) On Mon, 8 Apr 2024 at 00:41, babydr DBA James W. Laferriere via Bird-users wrote: > > Hello Pim . I get 404

Re: OSPF for IPv4 over IPv6 only?

2024-04-07 Thread babydr DBA James W. Laferriere via Bird-users
Hello Pim . I get 404 when trying to access the url below . Tia , JimL On Sun, 7 Apr 2024, Ondrej Zajicek via Bird-users wrote: On Sat, Apr 06, 2024 at 04:54:48PM +0200, Pim van Pelt via Bird-users wrote: Hoi Ondrej, Bird users, TL/DR: Ondrej's patch works and allows

Re: OSPF for IPv4 over IPv6 only?

2024-04-06 Thread Ondrej Zajicek via Bird-users
On Sat, Apr 06, 2024 at 04:54:48PM +0200, Pim van Pelt via Bird-users wrote: > Hoi Ondrej, Bird users, > > TL/DR: Ondrej's patch works and allows Bird to use OSPFv3 with either > completely unnumbered interfaces, where it 'borrows' a valid IPv4 address > from a loopback device. It does so without

Re: OSPF for IPv4 over IPv6 only?

2024-04-06 Thread Pim van Pelt via Bird-users
Hoi Ondrej, Bird users, TL/DR: Ondrej's patch works and allows Bird to use OSPFv3 with either completely unnumbered interfaces, where it 'borrows' a valid IPv4 address from a loopback device. It does so without breaking RFC5838! On 05.04.2024 16:27, Pim van Pelt via Bird-users wrote: **Let

Re: OSPF for IPv4 over IPv6 only?

2024-04-05 Thread Ondrej Zajicek via Bird-users
On Fri, Apr 05, 2024 at 04:27:27PM +0200, Pim van Pelt wrote: > Hoi, > > On 4/5/24 15:23, Ondrej Zajicek wrote: > > I have almost implemented 'extended next hop' for OSPFv3. But then i > > pivoted to supporting properly IPv4 loopback nexthop [*]. Now i have > > doubts about usefulness of

Re: OSPF for IPv4 over IPv6 only?

2024-04-05 Thread Pim van Pelt via Bird-users
Hoi, On 4/5/24 15:23, Ondrej Zajicek wrote: I have almost implemented 'extended next hop' for OSPFv3. But then i pivoted to supporting properly IPv4 loopback nexthop [*]. Now i have doubts about usefulness of 'extended next hop', as any IPv4 router needs at one IPv4 address anyways (at least to

Re: OSPF for IPv4 over IPv6 only?

2024-04-05 Thread Ondrej Zajicek via Bird-users
On Tue, Apr 02, 2024 at 11:49:21PM +0200, Pim van Pelt via Bird-users wrote: > Hoi Ondrej, > > On 02.04.2024 16:40, Ondrej Zajicek via Bird-users wrote: > > Although one could have option that forces it to interpret as IPv6, i > > would prefer to have 'extended next hop' option that allows to

Re: OSPF for IPv4 over IPv6 only?

2024-04-02 Thread Ondrej Zajicek via Bird-users
On Tue, Apr 02, 2024 at 11:49:21PM +0200, Pim van Pelt via Bird-users wrote: > Hoi Ondrej, Hi > On 02.04.2024 16:40, Ondrej Zajicek via Bird-users wrote: > > Although one could have option that forces it to interpret as IPv6, i > > would prefer to have 'extended next hop' option that allows to

Re: OSPF for IPv4 over IPv6 only?

2024-04-02 Thread Pim van Pelt via Bird-users
Hoi Ondrej, On 02.04.2024 16:40, Ondrej Zajicek via Bird-users wrote: Although one could have option that forces it to interpret as IPv6, i would prefer to have 'extended next hop' option that allows to accept both IPv4 and IPv6 next hops in Link-LSA. Did you mean that: 1) under normal

Re: OSPF for IPv4 over IPv6 only?

2024-04-02 Thread Ondrej Zajicek via Bird-users
On Mon, Apr 01, 2024 at 04:14:51PM +0200, Sebastian Hahn wrote: > > Sebastian - my interpretation of 5838 is slightly different, and I don't > > think it expressly forbids xAF nexthops: > > > 2.5: Although IPv6 link local addresses could be used as next hops for > > > IPv4 address families, it

Re: OSPF for IPv4 over IPv6 only?

2024-04-01 Thread Sebastian Hahn via Bird-users
Hi Pim, > On 31. Mar 2024, at 11:04, Pim van Pelt wrote: > > Hoi Ondrej, Nico, Sebastian, > > I am revisiting this thread based on the question from Benoit this week > (https://www.mail-archive.com/bird-users@network.cz/msg07961.html). > > On Tue, Jan 30, 2024 at 12:20:41PM +0100, Sebastian

Re: OSPF for IPv4 over IPv6 only?

2024-03-31 Thread Pim van Pelt via Bird-users
Hoi Ondrej, Nico, Sebastian, I am revisiting this thread based on the question from Benoit this week ( https://www.mail-archive.com/bird-users@network.cz/msg07961.html). On Tue, Jan 30, 2024 at 3:25 PM Ondrej Zajicek wrote: > On Tue, Jan 30, 2024 at 12:20:41PM +0100, Sebastian Hahn wrote: > >

Re: OSPF for IPv4 over IPv6 only?

2024-01-31 Thread Nico Schottelius via Bird-users
Good morning Sebastian, Sebastian Hahn writes: >> Is there a way to purely go IPv6 only and still relay stub network IPv4 >> information via an IPv6 only internal area? > > I was facing the same issue before, and unfortunately, RFC 5838 > explicitly forbids IPv4 over IPv6 for OSPF. everytime

Re: OSPF for IPv4 over IPv6 only?

2024-01-31 Thread Nico Schottelius via Bird-users
Good morning Bernd, Bernd Naumann writes:> > Hi Nico, > > If every router has "at least" a /32 IPv4 address on loopback[1], you > could do "OSPF unnumbered". It's not IPv4 over IPv6 but you do not need > a bunch of IPv4 peer addresses on each and every interface. > > [1] IIRC I had some issues

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Nico Schottelius via Bird-users
Ondrej Zajicek writes: >> I was facing the same issue before, and unfortunately, RFC 5838 >> explicitly forbids IPv4 over IPv6 for OSPF. > > Well, we could add 'extended next hop' option to override it, even if it > would be non-standard. It is rather small deviation. That would be amazing.

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Bernd Naumann
On 30.01.24 10:32, Nico Schottelius via Bird-users wrote: > > Good morning, > > if we are talking about BGP, IPv4 routing over IPv6 works > beautifully. We just add another IPv4 channel and get BGP MP. > > OSPFv3 works fine on IPv6 and when creating two instances, one for IPv6 > one for IPv4,

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Ondrej Zajicek
On Tue, Jan 30, 2024 at 12:20:41PM +0100, Sebastian Hahn wrote: > Hi Nico, > > > On 30. Jan 2024, at 10:32, Nico Schottelius via Bird-users > > wrote: > > OSPFv3 works fine on IPv6 and when creating two instances, one for IPv6 > > one for IPv4, things look correct. But how does OSFPv3

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Sebastian Hahn
> On 30. Jan 2024, at 14:09, Juliusz Chroboczek wrote: > >> As an alternative suggestion, I have since evaluated babel which mostly >> suits my purposes (except for some features not yet implemented in bird, >> like strict bind) > > Could you please explain what's the feature you're missing?

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Juliusz Chroboczek
> As an alternative suggestion, I have since evaluated babel which mostly > suits my purposes (except for some features not yet implemented in bird, > like strict bind) Could you please explain what's the feature you're missing? Thanks, -- Juliusz

Re: OSPF for IPv4 over IPv6 only?

2024-01-30 Thread Sebastian Hahn
Hi Nico, > On 30. Jan 2024, at 10:32, Nico Schottelius via Bird-users > wrote: > OSPFv3 works fine on IPv6 and when creating two instances, one for IPv6 > one for IPv4, things look correct. But how does OSFPv3 conceptually work > if the interface of the ospf area do not have IPv4 addresses