Re: [DNSOP] WGLC for draft-ietf-dnsop-let-localhost-be-localhost-02

[Viktor Dukhovni <[e-mail]>]

On Wed, Jan 24, 2018 at 05:50:26PM -0800, Paul Vixie wrote:

> Mark Andrews wrote:
> > > On 25 Jan 2018, at 8:38 am, Paul Vixie<[e-mail]>  wrote:
> > > 
> > > viktor, i don't disagree with your goals, but i have a proposal as to method.
> > > 
> > > no resolver should be sending single-label names in DNS requests, period.
> > 
> > I would qualify that as gethostbyaddr / getaddrinfo etc. should not be ….
> > 
> > Resolvers do more than lookup host names.
> 
> as others pointed out off-thread, you are right, and that's what i meant.

For the record, below are some TLDs that serve A/AAAA or MX records
for the single-label bare TLD.  Given search lists ndots, and so
on, these are often not resolvable, but there they are anyway:

    ai.                     A       209.59.119.34
    cm.                     A       195.24.205.60
    dk.                     A       193.163.102.58
    dk.                     AAAA    2a01:630:0:40::58
    gg.                     A       87.117.196.80
    je.                     A       87.117.196.80
    pa.                     A       168.77.8.43
    pn.                     A       80.68.93.100
    tk.                     A       217.119.57.22
    uz.                     A       91.212.89.8
    ws.                     A       64.70.19.33
    xn--l1acc.              A       180.149.98.78
    xn--l1acc.              A       202.170.80.40
    xn--l1acc.              A       218.100.84.27

    ai.                     MX      10 mail.offshore.ai.
    ax.                     MX      5 mail.aland.net.
    bh.                     MX      10 mail2.batelco.com.bh.
    cf.                     MX      0 mail.intnet.cf.
    dm.                     MX      10 mail.nic.dm.
    gp.                     MX      10 ns1.nic.gp.
    gt.                     MX      10 ASPMX.L.GOOGLE.COM.
    gt.                     MX      20 ALT1.ASPMX.L.GOOGLE.COM.
    gt.                     MX      20 ALT2.ASPMX.L.GOOGLE.COM.
    gt.                     MX      30 ASPMX2.GOOGLEMAIL.COM.
    gt.                     MX      30 ASPMX3.GOOGLEMAIL.COM.
    gt.                     MX      30 ASPMX4.GOOGLEMAIL.COM.
    gt.                     MX      30 ASPMX5.GOOGLEMAIL.COM.
    hr.                     MX      5 alpha.carnet.hr.
    kh.                     MX      10 ns1.dns.net.kh.
    km.                     MX      100 mail1.comorestelecom.km.
    lk.                     MX      10 malithi-slt.nic.lk.
    lk.                     MX      20 malithi-lc.nic.lk.
    mq.                     MX      10 mx1-mq.mediaserv.net.
    pa.                     MX      5 ns.pa.
    tt.                     MX      1 ASPMX.L.GOOGLE.COM.
    tt.                     MX      10 ALT1.ASPMX.L.GOOGLE.COM.
    ua.                     MX      10 mr.kolo.net.
    ws.                     MX      10 mail.worldsite.ws.

-- 
	Viktor.