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Summary

Intermittent recursive resolver issues on an internal view. Introduced with 9.11.3.

Steps to reproduce

n/a. Random queries seem to trigger, unable to reproduce manually for now.

What is the current bug behavior?

Error log sees Unexpected Errors and Invalid Arguments.

What is the expected correct behavior?

Relevant configuration files

view "internal" {
        match-clients                   { internal_hosts; trusted_hosts; };
        minimal-responses yes;
        recursion yes;
        allow-recursion                 { internal_hosts; trusted_hosts; };
        allow-query-cache               { internal_hosts; trusted_hosts; };
        include                         "/etc/bind/named.conf.default-zones";
        query-source address            1.2.3.4;
        query-source-v6 address         2001:aaaa::::2;
};

Relevant logs and/or screenshots

Mar 26 11:36:22 edi named[726]: ../../../../lib/isc/unix/socket.c:2135: unexpected error:
Mar 26 11:36:22 edi named[726]: internal_send: 127.0.0.1#39187: Invalid argument
Mar 26 11:36:22 edi named[726]: client @0x7fd748027af0 127.0.0.1#39187 (mail.dovecot.fi): view internal: error sending response: invalid file

Possible fixes

(If you can, link to the line of code that might be responsible for the problem.)