domain=cache.nixos.org > dig -t A cache.nixos.org diagnostic.sh: line 14: dig: command not found Exit: 0 > ping -c1 cache.nixos.org PING cache.nixos.org (2a04:4e42:84::347) 56 data bytes 64 bytes from 2a04:4e42:84::347: icmp_seq=1 ttl=50 time=27.8 ms --- cache.nixos.org ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 27.792/27.792/27.792/0.000 ms Exit: 0 > ping -4 -c1 cache.nixos.org PING cache.nixos.org (146.75.77.91) 56(84) bytes of data. 64 bytes from 146.75.77.91: icmp_seq=1 ttl=50 time=19.4 ms --- cache.nixos.org ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 19.435/19.435/19.435/0.000 ms Exit: 0 > ping -6 -c1 cache.nixos.org PING cache.nixos.org (2a04:4e42:84::347) 56 data bytes 64 bytes from 2a04:4e42:84::347: icmp_seq=1 ttl=50 time=20.4 ms --- cache.nixos.org ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 20.366/20.366/20.366/0.000 ms Exit: 0 > mtr -c 20 -w -r cache.nixos.org diagnostic.sh: line 14: mtr: command not found Exit: 0 > curl_test -4 http://cache.nixos.org/ * Host cache.nixos.org:80 was resolved. * IPv6: (none) * IPv4: 146.75.81.91 * Trying 146.75.81.91:80... * Established connection to cache.nixos.org (146.75.81.91 port 80) from 10.0.0.77 port 44296 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0* using HTTP/1.x > GET / HTTP/1.1 > Host: cache.nixos.org > User-Agent: curl/8.23.0 > Accept: */* > * Request completely sent off < HTTP/1.1 301 Moved Permanently < Connection: close < Content-Length: 0 < Server: Varnish < Retry-After: 0 < Location: https://cache.nixos.org/ < Accept-Ranges: bytes < Date: Mon, 09 Nov 2026 19:33:56 GMT < Via: 1.1 varnish < X-Served-By: cache-chi-klot8100031-CHI < X-Cache: HIT < X-Cache-Hits: 0 < X-Timer: S1794252836.005747,VS0,VE0 < access-control-allow-origin: * < 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 * shutting down connection #0 time_namelookup: 0.011844 time_connect: 0.034247 time_appconnect: 0.000000 time_pretransfer: 0.034338 time_redirect: 0.000000 time_starttransfer: 0.053461 time_total: 0.053589 Exit: 0 > curl_test -6 http://cache.nixos.org/ * Host cache.nixos.org:80 was resolved. * IPv6: 2a04:4e42:84::347 * IPv4: (none) * Trying [2a04:4e42:84::347]:80... * Established connection to cache.nixos.org (2a04:4e42:84::347 port 80) from 2601:445:882:4820:6ad8:ad70:fd76:6397 port 56448 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0* using HTTP/1.x > GET / HTTP/1.1 > Host: cache.nixos.org > User-Agent: curl/8.23.0 > Accept: */* > * Request completely sent off < HTTP/1.1 301 Moved Permanently < Connection: close < Content-Length: 0 < Server: Varnish < Retry-After: 0 < Location: https://cache.nixos.org/ < Accept-Ranges: bytes < Date: Mon, 09 Nov 2026 19:33:56 GMT < Via: 1.1 varnish < X-Served-By: cache-chi-klot8100112-CHI < X-Cache: HIT < X-Cache-Hits: 0 < X-Timer: S1794252836.071481,VS0,VE0 < access-control-allow-origin: * < 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 * shutting down connection #0 time_namelookup: 0.011356 time_connect: 0.033477 time_appconnect: 0.000000 time_pretransfer: 0.033549 time_redirect: 0.000000 time_starttransfer: 0.054455 time_total: 0.054608 Exit: 0 > curl_test -4 https://cache.nixos.org/ * Host cache.nixos.org:443 was resolved. * IPv6: (none) * IPv4: 146.75.81.91 * Trying 146.75.81.91:443... * ALPN: curl offers h2,http/1.1 } [5 bytes data] * TLSv1.3 (OUT), TLS handshake, Client hello (1): } [1561 bytes data] * SSL Trust Anchors: * OpenSSL default paths (fallback) { [5 bytes data] * TLSv1.3 (IN), TLS handshake, Server hello (2): { [1210 bytes data] * TLSv1.3 (IN), TLS change cipher, Change cipher spec (1): { [1 bytes data] * TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8): { [19 bytes data] * TLSv1.3 (IN), TLS handshake, Certificate (11): { [4074 bytes data] * TLSv1.3 (IN), TLS handshake, CERT verify (15): { [264 bytes data] * TLSv1.3 (IN), TLS handshake, Finished (20): { [36 bytes data] * TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1): } [1 bytes data] * TLSv1.3 (OUT), TLS handshake, Finished (20): } [36 bytes data] * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 / X25519MLKEM768 / RSASSA-PSS * ALPN: server accepted h2 * Server certificate: * subject: CN=cache.nixos.org * start date: Nov 8 21:23:04 2026 GMT * expire date: Feb 6 21:23:03 2027 GMT * issuer: C=US; O=Let's Encrypt; CN=YR2 * Certificate level 0: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 1: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 2: Public key type RSA (4096/152 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 3: Public key type RSA (4096/152 Bits/secBits), signed using sha256WithRSAEncryption * subjectAltName: "cache.nixos.org" matches cert's "cache.nixos.org" * OpenSSL verify result: 0 * SSL certificate verified via OpenSSL. * Established connection to cache.nixos.org (146.75.81.91 port 443) from 10.0.0.77 port 48798 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0* using HTTP/2 * [HTTP/2] [1] OPENED stream for https://cache.nixos.org/ * [HTTP/2] [1] [:method: GET] * [HTTP/2] [1] [:scheme: https] * [HTTP/2] [1] [:authority: cache.nixos.org] * [HTTP/2] [1] [:path: /] * [HTTP/2] [1] [user-agent: curl/8.23.0] * [HTTP/2] [1] [accept: */*] } [5 bytes data] > GET / HTTP/2 > Host: cache.nixos.org > User-Agent: curl/8.23.0 > Accept: */* > * Request completely sent off { [5 bytes data] * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4): { [201 bytes data] < HTTP/2 200 < last-modified: Wed, 15 Oct 2025 12:11:46 GMT < etag: "1360586d0eb7705e1952d7245a7b3fae" < x-amz-server-side-encryption: AES256 < content-type: text/html < server: AmazonS3 < via: 1.1 varnish, 1.1 varnish < accept-ranges: bytes < date: Mon, 09 Nov 2026 19:33:56 GMT < age: 68004 < x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100106-CHI < x-cache: HIT, HIT < x-cache-hits: 105, 1 < access-control-allow-origin: * < content-length: 2131 < { [1115 bytes data] 100 2131 100 2131 0 0 21210 0 0 100 2131 100 2131 0 0 21202 0 0 100 2131 100 2131 0 0 21196 0 0 * Connection #0 to host cache.nixos.org:443 left intact time_namelookup: 0.016916 time_connect: 0.040987 time_appconnect: 0.072543 time_pretransfer: 0.072707 time_redirect: 0.000000 time_starttransfer: 0.100115 time_total: 0.100568 Exit: 0 > curl_test -6 https://cache.nixos.org/ * Host cache.nixos.org:443 was resolved. * IPv6: 2a04:4e42:84::347 * IPv4: (none) * Trying [2a04:4e42:84::347]:443... * ALPN: curl offers h2,http/1.1 } [5 bytes data] * TLSv1.3 (OUT), TLS handshake, Client hello (1): } [1561 bytes data] * SSL Trust Anchors: * OpenSSL default paths (fallback) { [5 bytes data] * TLSv1.3 (IN), TLS handshake, Server hello (2): { [1210 bytes data] * TLSv1.3 (IN), TLS change cipher, Change cipher spec (1): { [1 bytes data] * TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8): { [19 bytes data] * TLSv1.3 (IN), TLS handshake, Certificate (11): { [4074 bytes data] * TLSv1.3 (IN), TLS handshake, CERT verify (15): { [264 bytes data] * TLSv1.3 (IN), TLS handshake, Finished (20): { [36 bytes data] * TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1): } [1 bytes data] * TLSv1.3 (OUT), TLS handshake, Finished (20): } [36 bytes data] * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 / X25519MLKEM768 / RSASSA-PSS * ALPN: server accepted h2 * Server certificate: * subject: CN=cache.nixos.org * start date: Nov 8 21:23:04 2026 GMT * expire date: Feb 6 21:23:03 2027 GMT * issuer: C=US; O=Let's Encrypt; CN=YR2 * Certificate level 0: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 1: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 2: Public key type RSA (4096/152 Bits/secBits), signed using sha256WithRSAEncryption * Certificate level 3: Public key type RSA (4096/152 Bits/secBits), signed using sha256WithRSAEncryption * subjectAltName: "cache.nixos.org" matches cert's "cache.nixos.org" * OpenSSL verify result: 0 * SSL certificate verified via OpenSSL. * Established connection to cache.nixos.org (2a04:4e42:84::347 port 443) from 2601:445:882:4820:6ad8:ad70:fd76:6397 port 41812 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0* using HTTP/2 * [HTTP/2] [1] OPENED stream for https://cache.nixos.org/ * [HTTP/2] [1] [:method: GET] * [HTTP/2] [1] [:scheme: https] * [HTTP/2] [1] [:authority: cache.nixos.org] * [HTTP/2] [1] [:path: /] * [HTTP/2] [1] [user-agent: curl/8.23.0] * [HTTP/2] [1] [accept: */*] } [5 bytes data] > GET / HTTP/2 > Host: cache.nixos.org > User-Agent: curl/8.23.0 > Accept: */* > * Request completely sent off { [5 bytes data] * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4): { [201 bytes data] < HTTP/2 200 < last-modified: Wed, 15 Oct 2025 12:11:46 GMT < etag: "1360586d0eb7705e1952d7245a7b3fae" < x-amz-server-side-encryption: AES256 < content-type: text/html < server: AmazonS3 < via: 1.1 varnish, 1.1 varnish < accept-ranges: bytes < date: Mon, 09 Nov 2026 19:33:56 GMT < age: 68004 < x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100049-CHI < x-cache: HIT, HIT < x-cache-hits: 105, 1 < access-control-allow-origin: * < content-length: 2131 < { [1115 bytes data] 100 2131 100 2131 0 0 24733 0 0 100 2131 100 2131 0 0 24726 0 0 100 2131 100 2131 0 0 24719 0 0 * Connection #0 to host cache.nixos.org:443 left intact time_namelookup: 0.010815 time_connect: 0.029621 time_appconnect: 0.063618 time_pretransfer: 0.063752 time_redirect: 0.000000 time_starttransfer: 0.086029 time_total: 0.086246 Exit: 0 > curl -I -4 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100044-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0 > curl -I -4 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100031-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0 > curl -I -4 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100144-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0 > curl -I -6 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-kigq8000061-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0 > curl -I -6 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-klot8100078-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0 > curl -I -6 https://cache.nixos.org/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 0 2131 0 0 0 0 0 0 0 HTTP/2 200 last-modified: Wed, 15 Oct 2025 12:11:46 GMT etag: "1360586d0eb7705e1952d7245a7b3fae" x-amz-server-side-encryption: AES256 content-type: text/html server: AmazonS3 via: 1.1 varnish, 1.1 varnish accept-ranges: bytes date: Mon, 09 Nov 2026 19:33:56 GMT age: 68004 x-served-by: cache-iad-kiad7000040-IAD, cache-chi-kigq8000077-CHI x-cache: HIT, HIT x-cache-hits: 105, 1 access-control-allow-origin: * content-length: 2131 Exit: 0