CNAME auth.factorio.com gives a A from shared address space (RFC6598)

[alarig]

Hello,

While trying to connect, the game says that it can’t connect to auth.factorio.com. If I mtr, the trace ends at the edge of my network. Which, given the IP address, is to be expected, it’s not a public address!

Code: Select all

~ % dig -t A auth.factorio.com

; <<>> DiG 9.16.22 <<>> -t A auth.factorio.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59820
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;auth.factorio.com.		IN	A

;; ANSWER SECTION:
auth.factorio.com.	112	IN	CNAME	perpendicular-shark-yujs6bj61byj1q191y5wyd47.herokudns.com.
perpendicular-shark-yujs6bj61byj1q191y5wyd47.herokudns.com. 6 IN A 100.64.1.46

;; Query time: 43 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Feb 24 18:10:16 CET 2022
;; MSG SIZE  rcvd: 131

The issue isn’t directly on factorio domain the on herokudns. I don’t have any contact there but you very probably have a technical support.

Thanks!

[atomizer]

Can't reproduce, are you sure your upstream dns is working correctly? Try a different server.

[vinzenz]

yep our hosting provider had an incident https://status.heroku.com/incidents/2402

[alarig]

Thanks for the confirmation