今天早上续签 Let's Encrypt 的证书,发现报
[WARNING] Stapling OCSP: no OCSP stapling for [*.com]: making OCSP request: Post http://ocsp.int-x3.letsencrypt.org: dial tcp 88.191.249.182:80: i/o timeout
nslookup 后发现
nslookup ocsp.int-x3.letsencrypt.org
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
ocsp.int-x3.letsencrypt.org canonical name = ocsp.int-x3.letsencrypt.org.edgesuite.net.
ocsp.int-x3.letsencrypt.org.edgesuite.net canonical name = a771.dscq.akamai.net.
Name: a771.dscq.akamai.net
Address: 31.13.65.1
Name: a771.dscq.akamai.net
Address: 2001::4b7e:8783
用 ipip 的 DNS 解析得到同样结果