-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday, 2021-04-16 at 12:40 +0200, Wolfgang Rosenauer wrote:
Am 16.04.21 um 12:27 schrieb Carlos E. R.:
On 16/04/2021 11.58, Michael Pujos wrote:
I've see something like this happening randomly in Firefox: occasionally, loading a page fails and works on a retry. Could be a Firefox specific issue though as I've not seen it anywhere else.
I have seen firefox fail on sites that work with system ping. Firefox uses its own resolver, not the system configured one, and in some (reproducible) circumstances it fails.
...
In any case about the Firefox comment: This is not totally the case. Firefox still should use the system resolver by default. It has additional local caching though. Firefox can be configured to use DoH bypassing _everything_ but for openSUSE builds this is disabled by default.
I have noticed the issue both in openSUSE (Leap) and Android, while Chrome doesn't have it. I haven't tested for the cache possibility, by restarting FF.
Typically in my case it's exactly like in the top post. A direct follow up DNS request succeeds typically. Just with Firefox that is not the case because a failed request is cached for a minute.
No, my problem stays for half an hour at least (maybe days?) I'll describe it. I use a dynamic DNS server to reach my own machine from outside. Occasionally, my IP changes (I can force it); the internet DNS server is updated, but Firefox reaches my old IP, which at that point belongs to another Telefónica client. Chrome reaches the correct client, as does ssh. I solved it by doing: preferences, search "DNS", Network Settings Configure how Firefox connects to the internet. Settings… Click settings, change to "Use system proxy setting" I don't have a proxy, but google gave this procedure to solve the issue. I don't know a method to make FF display the IP address for a name. - -- Cheers, Carlos E. R. (from openSUSE 15.2 x86_64 at Telcontar) -----BEGIN PGP SIGNATURE----- iHoEARECADoWIQQZEb51mJKK1KpcU/W1MxgcbY1H1QUCYHlvBhwccm9iaW4ubGlz dGFzQHRlbGVmb25pY2EubmV0AAoJELUzGBxtjUfVYpwAnjF+5qPjj99oeBvgYa26 CjTtADS9AJ993dTzTAGzHp1oCHYC/C8xHZJY6A== =AD2W -----END PGP SIGNATURE-----