wildcard match pattern is confusing

[nearbyfly]

Hi,

In below example, for dns A query my.abc.tas01.local the result count is 3. From source code match string is "/skydns/local/tas01/abc/my". So it matches domain as "*.my*.abc.tas01.local." Is that expected?

Another confusion is if query with "*.my.abc.tas01.local", the result count is only 1.

####etcd dump
/skydns/local/tas01/abc/my/3
{"host":"169.254.8.113","port":52027}
/skydns/local/tas01/abc/my1/4
{"host":"169.254.8.114","port":52027}
/skydns/local/tas01/abc/myx/4
{"host":"169.254.8.117","port":52027}

####query with wildcard
dig +time=60 @11.0.0.11 -p 15353 my.abc.tas01.local.

; <<>> DiG 9.11.3-1ubuntu1.5-Ubuntu <<>> +time=60 @11.0.0.11 -p 15353 my.abc.tas01.local.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; WARNING: .local is reserved for Multicast DNS
;; You are currently testing what happens when an mDNS query is leaked to DNS
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25526
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;my.abc.tas01.local. IN A

;; ANSWER SECTION:
my.abc.tas01.local. 3600 IN A 169.254.8.114
my.abc.tas01.local. 3600 IN A 169.254.8.117
my.abc.tas01.local. 3600 IN A 169.254.8.113

;; Query time: 2 msec
;; SERVER: 11.0.0.11#15353(11.0.0.11)
;; WHEN: Fri Mar 29 16:21:38 CST 2019
;; MSG SIZE rcvd: 84

####query wildcard explicitly
dig +time=60 @11.0.0.11 -p 15353 *.my.abc.tas01.local.

; <<>> DiG 9.11.3-1ubuntu1.5-Ubuntu <<>> +time=60 @11.0.0.11 -p 15353 *.my.abc.tas01.local.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; WARNING: .local is reserved for Multicast DNS
;; You are currently testing what happens when an mDNS query is leaked to DNS
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31314
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;*.my.abc.tas01.local. IN A

;; ANSWER SECTION:
*.my.abc.tas01.local. 3600 IN A 169.254.8.113

;; Query time: 9 msec
;; SERVER: 11.0.0.11#15353(11.0.0.11)
;; WHEN: Fri Mar 29 16:30:45 CST 2019
;; MSG SIZE rcvd: 54

Thanks,
Neil