Public bug reported:
231-9ubuntu3
If a DNS lookup returns SERVFAIL, systemd-resolved seems to cache the
result for very long (infinity?). I have to restart systemd-resolved to
have the negative caching purged.
After SERVFAIL DNS server issue has been resolved, chromium/firefox
still returns DNS error despite host can correctly resolve the name.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1668771
Title:
systemd-resolved negative caching for extended period of time
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