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Re: Alternatives to the flag (Was:Confirmation to advance: draft-ietf-6man-ipv6only-flag-05)

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 15 May 2019 22:03 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Gyan Mishra <hayabusagsm@gmail.com>
cc: Nick Hilliard <nick@foobar.org>, 6man WG <ipv6@ietf.org>
Subject: Re: Alternatives to the flag (Was:Confirmation to advance: draft-ietf-6man-ipv6only-flag-05)
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References: <F8BFFCAD-E58E-4736-8A1C-56579B6F6032@employees.org> <a2465e81-a17f-ab48-efda-20fe12a70077@foobar.org> <30239E0C-C444-4A7E-8342-AEE47BF8A2BB@employees.org> <20190505200449.GB7546@vurt.meerval.net> <80073906-c3c0-1f22-9e7f-c2b349063936@gmail.com> <CAO42Z2xzVW3m0mN7jEn8SYyYCYhrufVnkfp3rBjJcijBkvucNQ@mail.gmail.com> <CACWOCC-35yVYXSRR0sRL-MBMHyOFZtJx9E9h14G8qqVh5T7qGA@mail.gmail.com> <232c1a43-0fd9-4eae-737b-260a3906f72a@gmail.com> <663F6C0B-7B8A-4088-B9C0-B2867B0C3EB8@gmail.com> <CAN-Dau3VJN7qNHAW-yStMrDRCa4vsDs2ObkAxswnYbcHde2t_w@mail.gmail.com> <m1hPqHO-0000J8C@stereo.hq.phicoh.net> <CAN-Dau3R=4JbcbK7tWkJKYzVjq7DvAAEjVsbCLbZdYYO8OJ0YA@mail.gmail.com> <m1hQ7Dm-0000M3C@stereo.hq.phicoh.net> <CAN-Dau040j6U+1CCn0QJiVMy2nVShHqqSFdCkM-FbMAH-2wjRA@mail.gmail.com> <m1hQCYr-0000KBC@stereo.hq.phicoh.net> <CAN-Dau3Lcv3qTBVtig36RfbQKuGpoqdTLfrM=eWfYxCCQRy5Sw@mail.gmail.com> <m1hQfSy-0000LTC@stereo.hq.phicoh.net> <CAN-Dau3akjaZ-j16ucOY=-d0nabG4ZdFs6wrSD4EGr3NEh9Wsw@mail.gmail.com> <a6 46a186-be05-cdff-c8e4-61cf09930494@foobar.org> <0FDCBB0C-B5A6-48C0-AABE-91FDE49D8D63@gmail.com>
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Date: Wed, 15 May 2019 18:03:42 -0400
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Gyan Mishra <hayabusagsm@gmail.com> wrote:
    > I have not tried but can printers use IPv6 link local to print
    > similar to IPv4 when a dhcp server is not present?

I think mine can.

In fact, the dhcp server on my "corporate" network (the one trusted for
stuff, vs the one the TVs, media, and experiments, and family is on) has been
broken for a few months for hysterical raisons.  {Fixing it involves being
offline for a few hours, while I reconfigure the replacement router... so I
haven't done it yet}.

So my printing is all over IPv6, but it's not always over LL.
I notice the LLv6 comes and goes, and I don't quite know why, so I'll hard
code the DNS/IPv6-GUA name, and then I'll go back to dnssd discovered LL.

The real question is however: how many clients support those DHCPv4 options?

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

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