loopback

Ward, Mike S mward at SSFCU.org
Tue Feb 18 14:34:41 UTC 2020


Hello all, I have a small problem, and I was wondering if someone could help me.  My bind9 dns gets a query for loopback. I have tried and tried to define the word loopback in the dns as a forward zone with reverse loopkup, but doesn't seem to take. I have tried to CNAME it using localhost, but that doesn't seem to fix it either. My version of BIND is: BIND 9.12.3 <id:6c8e92c> Can someone please help? Please help me define loopback so that request for loopback does not fail as in the entries below. My localhost configurations are:

$TTL 3h

$ORIGIN localhost.

@       1h      IN     SOA     @       root (
                       02112008        ; serial
                       3600            ; refresh 1 hour
                       2H              ; retry 1 half hour
                       4W              ; expiry after 2 weeks
                       1h              ; minimum TTL
                       )

@       IN      NS      @
           IN      A       127.0.0.1

TTL 3h

@       IN      SOA     localhost. root.localhost. (
                        02112008    ; Serial
                        3600        ; Refresh after 1 Hour
                        1800        ; Retry after 1 Half Hour
                        1209600     ; Expire after 2 Weeks
                        86400 )     ; Minimum TTL 1 Day

       IN      NS      localhost.

1      IN      PTR     localhost.

view "trusted" {
                match-clients {
                                "trusted";
                };
                zone "." {
                                type hint;
                                file "/etc/namedb/master/internal-in/db.root.hint.txt";
                };
                zone "0.0.127.in-addr.arpa" {
                                type master;
                                file "/etc/namedb/master/internal-in/db.s127-000-000.txt";
                };
                zone "mf.ssfcu.org" {
                                type master;
                                file "/etc/namedb/master/internal-in/db.mf.ssfcu.org.txt";
                };



Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008: UDP request
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008: view trusted: using view 'trusted'
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008: view trusted: request is not signed
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008: view trusted: recursion available
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008: view trusted: query
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: query: loopback IN A + (172.20.234.135)
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: query: loopback IN A + (172.20.234.135)
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: query: loopback IN A + (172.20.234.135)
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: ns_client_attach: ref = 1
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: query (cache) 'loopback/A/IN' approved
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f00afc90 172.27.1.121#6008 (loopback): view trusted: replace
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: clientmgr @0x7f18f0042e60: get client
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: clientmgr @0x7f18f0042e60: recycle
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: fetch: loopback/A
Feb 10 10:56:04 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: fetch: loopback/A
Feb 10 10:55:46 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: log_ns_ttl: fctx 0x7f18f06afe30: fctx_create: loopback (in '.'?): 1 3600000
Feb 10 10:55:46 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: client @0x7f18f06ccf40 (no-peer): udprecv
Feb 10 10:55:46 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: expiring v4 for name 0x7f18f6a11270
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: fetch: ./NS
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: fetch: ./NS
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: dns_adb_createfind: found A for name M.ROOT-SERVERS.NET (0x7f18f6a103a0) in db
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: sending packet to 172.16.6.13#53#012;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id:  61688#012;; flags: rd; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1#012;; OPT PSEUDOSECTION:#012; EDNS: version: 0, flags: do; udp: 4096#012; COOKIE: 94f323ba3343b72a#012;; QUESTION SECTION:#012;loopback.#011#011#011IN#011A
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: sending packet to 172.16.6.13#53#012;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id:  15518#012;; flags: rd; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1#012;; OPT PSEUDOSECTION:#012; EDNS: version: 0, flags: do; udp: 4096#012; COOKIE: 94f323ba3343b72a#012;; QUESTION SECTION:#012;.#011#011#011#011IN#011NS
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: received packet from 172.16.6.13#53#012;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id:  61688#012;; flags: qr rd ra; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1#012;; OPT PSEUDOSECTION:#012; EDNS: version: 0, flags: do; udp: 4000#012;; QUESTION SECTION:#012;loopback.#011#011#011IN#011A
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: sending packet to 172.20.100.142#53#012;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id:   5961#012;; flags: rd; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1#012;; OPT PSEUDOSECTION:#012; EDNS: version: 0, flags: do; udp: 4096#012; COOKIE: b1b5fdc46581efcd#012;; QUESTION SECTION:#012;loopback.#011#011#011IN#011A
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: log_ns_ttl: fctx 0x7f18f0700d00: rctx_answer: . (in '.'?): 1 3600000
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: delete_node(): 0x7f18f6a9d010 cac-api.mastercard.com.edgekey.net (bucket 1)
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: delete_node(): 0x7f18f6a9d010 cac-api.mastercard.com.edgekey.net (bucket 1)
Feb 10 10:56:06 zosdns.mf.ssfcu.org 90tvmcdns2 named[7845]: resolver priming query complete


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