The resolver is probably incorrectly configured in the ROSA Linux distribution.
/etc/systemd/resolved.conf.patch
--- resolved.conf
+++ resolved.conf
@@ -20,8 +20,8 @@
# Google: 8.8.8.8#dns.google 8.8.4.4#dns.google 2001:4860:4860::8888#dns.google 2001:4860:4860::8844#dns.google
# Quad9: 9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
#DNS=
-#FallbackDNS=77.88.8.8 77.88.8.1 8.8.8.8 8.8.4.4
-#Domains=
+FallbackDNS=9.9.9.9 149.112.112.112 2620:fe::fe 2620:fe::9
+Domains=~.
#DNSSEC=no
#DNSOverTLS=no
#MulticastDNS=resolve
After the uninstall, the file /etc/systemd/resolved.conf are returned by default.
Note: Additionally, the patch eliminates DNS leaks, since by default, ROSA FallbackDNS uses unreliable Yandex DNS servers. Patch allows you to use, for example, Cloudflare (TM) WARP (see warpgui) or VPNs securely.
Tested in ROSA-12.4-Plasma/XFCE.