I installed systemd-246.11-1.fc33 from koji on a few machines and after restart many web sites could not be found! It was true for different browsers. Reinstalling the older version fixed the access issue. FYI before it is pushed out.
Same issue with systemd-246.12-1.fc33. Looks like bug https://bugzilla.redhat.com/show_bug.cgi?id=1933433
I assume this is the same issue. Please follow the debugging information request in comments 5 and 6 is you can. *** This bug has been marked as a duplicate of bug 1938460 ***
I did the testing with medlineplus.gov like in the comment #6 of the above bug but that showed no error. However, I then did it on one of the sites that could not find the server "lwn.net" and here is what I got (about 60% of my sites give the same error). These work fine after downgrading to systemd-246.10-1 ======== resolve ======== _nss_resolve_gethostbyname4_r("lwn.net") → status=NSS_STATUS_NOTFOUND pat=0x(nil) errno=999/--- h_errno=1/Unknown host _nss_resolve_gethostbyname3_r("lwn.net", AF_INET) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host ttl=2147483647 _nss_resolve_gethostbyname3_r("lwn.net", AF_INET6) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host ttl=2147483647 _nss_resolve_gethostbyname3_r("lwn.net", *) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host ttl=2147483647 _nss_resolve_gethostbyname3_r("lwn.net", AF_UNIX) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=3/Unknown server error ttl=2147483647 _nss_resolve_gethostbyname2_r("lwn.net", AF_INET) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host _nss_resolve_gethostbyname2_r("lwn.net", AF_INET6) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host _nss_resolve_gethostbyname2_r("lwn.net", *) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host _nss_resolve_gethostbyname2_r("lwn.net", AF_UNIX) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=3/Unknown server error _nss_resolve_gethostbyname_r("lwn.net") → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=1/Unknown host ======== dns ======== _nss_dns_gethostbyname4_r("lwn.net") → status=NSS_STATUS_NOTFOUND pat=0x(nil) errno=999/--- h_errno=4/No address associated with name _nss_dns_gethostbyname3_r("lwn.net", AF_INET) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=4/No address associated with name ttl=2147483647 _nss_dns_gethostbyname3_r("lwn.net", AF_INET6) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=4/No address associated with name ttl=2147483647 _nss_dns_gethostbyname3_r("lwn.net", *) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=4/No address associated with name ttl=2147483647 _nss_dns_gethostbyname3_r("lwn.net", AF_UNIX) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=4/No address associated with name ttl=2147483647 _nss_dns_gethostbyname2_r("lwn.net", AF_INET) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=4/No address associated with name _nss_dns_gethostbyname2_r("lwn.net", AF_INET6) → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=4/No address associated with name _nss_dns_gethostbyname2_r("lwn.net", *) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=4/No address associated with name _nss_dns_gethostbyname2_r("lwn.net", AF_UNIX) → status=NSS_STATUS_UNAVAIL errno=97/EAFNOSUPPORT h_errno=4/No address associated with name _nss_dns_gethostbyname_r("lwn.net") → status=NSS_STATUS_NOTFOUND errno=999/--- h_errno=4/No address associated with name