I found the same issue: system time was unset, could not resolve host names (ie ping
http://www.google.com failed).
$this->bbcode_second_pass_code('', '% journalctl -u systemd-resolved
Apr 30 08:51:57 basement systemd-resolved[484]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in->
Apr 30 08:51:57 basement systemd-resolved[484]: Using system hostname 'basement'.
Apr 30 08:51:57 basement systemd[1]: Started Network Name Resolution.
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question . IN DNSKEY: signature-expired
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question com IN DS: signature-expired
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question com IN DNSKEY: signature-expired
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question yahoo.com IN DS: signature-expired
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question yahoo.com IN SOA: signature-expired
Apr 30 08:51:57 basement systemd-resolved[484]: DNSSEC validation failed for question www.yahoo.com IN A: signature-expired
Apr 30 08:51:58 basement systemd-resolved[484]: DNSSEC validation failed for question . IN DNSKEY: signature-expired
Apr 30 08:51:58 basement systemd-resolved[484]: DNSSEC validation failed for question org IN DS: signature-expired
Apr 30 08:51:58 basement systemd-resolved[484]: DNSSEC validation failed for question org IN DNSKEY: signature-expired
...
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question 0.arch.pool.ntp.org IN DS: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question 0.arch.pool.ntp.org IN SOA: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question 0.arch.pool.ntp.org IN A: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question . IN DNSKEY: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question org IN DS: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question org IN DNSKEY: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question ntp.org IN DS: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question ntp.org IN SOA: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question pool.ntp.org IN DS: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question 1.arch.pool.ntp.org IN SOA: signature-expired
Apr 30 08:52:14 basement systemd-resolved[484]: DNSSEC validation failed for question 1.arch.pool.ntp.org IN A: signature-expired')
Stopping systemd-resolved, and manually defining /etc/resolv.conf fixed the issue:
$this->bbcode_second_pass_code('', '# cat /etc/resolv.conf
nameserver 192.168.1.1')
What I find odd is that only 1 of 3 RPi boxes had this problem.
EDIT:
https://bbs.archlinux.org/viewtopic.php?id=240427