EDNS Compliance Tester

Checking: 'bristolacappella.co.uk' as at 2018-10-24T10:13:34Z

bristolacappella.co.uk. @80.68.80.26 (a.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt
bristolacappella.co.uk. @2001:41c8:2::3 (a.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt

bristolacappella.co.uk. @80.68.80.27 (c.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt
bristolacappella.co.uk. @2001:41c8:2::5 (c.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt

bristolacappella.co.uk. @85.17.170.78 (b.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt
bristolacappella.co.uk. @2001:1af8:4100:a08c:22::10 (b.ns.bytemark.co.uk.): dns=ok edns=noopt edns1=noerror,noopt,soa edns@512=noopt ednsopt=noopt edns1opt=noerror,noopt,soa do=noopt ednsflags=noopt docookie=noopt edns512tcp=noopt optlist=noopt

The Following Tests Failed

Warning: test failures may indicate that some DNS clients cannot resolve the zone or will get a unintended answer or resolution will be slower than necessary.

Warning: failure to address issues identified here may make future DNS extensions that you want to use ineffective. In particular echoing back unknown EDNS options and unknown EDNS flags will break future signaling between DNS client and DNS server. We already have examples of this were you cannot depend on the AD flag bit meaning anything in replies because too many DNS servers just echo it back. Similarly the EDNS Client Subnet (ECS) option cannot just be sent to everyone in part because of servers just echoing it back.

Codes

To retrieve this report in the future: https://ednscomp.isc.org/ednscomp/bfc0777a08




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