Name resolution and underscores? www.engadget.com

[Paul Ripke <stix%stix.id.au@localhost>]

Do we check for underscores somewhere in name resolution? I know that
RFC 1035 disallows them from hostnames... I had a quick browse of our code
and nothing obvious stood out.

Tested on netbsd-10 amd64, & current as of a few hours ago, amd64:

ksh$ dig www.engadget.com

; <<>> DiG 9.18.24 <<>> www.engadget.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21276
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
; COOKIE: 77f074b515e86de601000000696dd54bb9e5020c3f647174 (good)
;; QUESTION SECTION:
;www.engadget.com.              IN      A

;; ANSWER SECTION:
www.engadget.com.       41      IN      CNAME   engadget-ycpi-media_edge.g03.yahoodns.net.
engadget-ycpi-media_edge.g03.yahoodns.net. 50 IN A 183.177.68.211
engadget-ycpi-media_edge.g03.yahoodns.net. 50 IN A 183.177.68.210

;; Query time: 16 msec
;; SERVER: 192.168.0.1#53(192.168.0.1) (UDP)
;; WHEN: Mon Jan 19 17:55:07 AEDT 2026
;; MSG SIZE  rcvd: 160

ksh$ ping www.engadget.com
ping: Cannot resolve "www.engadget.com" (Unknown host)
ksh$ dig aaaa www.engadget.com

; <<>> DiG 9.18.24 <<>> aaaa www.engadget.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6167
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
; COOKIE: 65692c8e76429c9501000000696dd58a38d505be8f373aac (good)
;; QUESTION SECTION:
;www.engadget.com.              IN      AAAA

;; ANSWER SECTION:
www.engadget.com.       154     IN      CNAME   engadget-ycpi-media_edge.g03.yahoodns.net.
engadget-ycpi-media_edge.g03.yahoodns.net. 60 IN AAAA 2406:6e00:f048:1fa::3000
engadget-ycpi-media_edge.g03.yahoodns.net. 60 IN AAAA 2406:6e00:f048:1fa::2000

;; Query time: 9 msec
;; SERVER: 192.168.0.1#53(192.168.0.1) (UDP)
;; WHEN: Mon Jan 19 17:56:10 AEDT 2026
;; MSG SIZE  rcvd: 184
ksh$ ping6 www.engadget.com     
ping6: No address associated with hostname

-- 
Paul Ripke
"Great minds discuss ideas, average minds discuss events, small minds
 discuss people."
-- Disputed: Often attributed to Eleanor Roosevelt. 1948.