[root@IPF ~]# ping -c4 www.google.com
ping: www.google.com: Name or service not known
[root@IPF ~]# ping -c4 81.3.27.38
PING 81.3.27.38 (81.3.27.38) 56(84) bytes of data.
64 bytes from 81.3.27.38: icmp_seq=1 ttl=54 time=20.9 ms
64 bytes from 81.3.27.38: icmp_seq=2 ttl=54 time=21.0 ms
64 bytes from 81.3.27.38: icmp_seq=3 ttl=54 time=20.9 ms
64 bytes from 81.3.27.38: icmp_seq=4 ttl=54 time=20.8 ms
— 81.3.27.38 ping statistics —
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 20.820/20.906/20.987/0.064 ms
[root@IPF ~]# kdig @1.1.1.1 +dnssec +bufsize=1232 +tls-ca=/etc/ssl/certs/ca-bundle.crt +tls-hostname=cloudflare-dns.com -d
;; DEBUG: Querying for owner(.), class(1), type(2), server(1.1.1.1), port(853), protocol(TCP)
;; DEBUG: TLS, imported 128 certificates from ‘/etc/ssl/certs/ca-bundle.crt’
;; DEBUG: TLS, received certificate hierarchy:
;; DEBUG: #1, C=US,ST=California,L=San Francisco,O=Cloudflare, Inc.,CN=cloudflare-dns.com
;; DEBUG: SHA-256 PIN: od9obscoXQND56/DikypZrJkXGvbQV5Y61QGfcNitHo=
;; DEBUG: #2, C=US,O=DigiCert Inc,CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1
;; DEBUG: SHA-256 PIN: e0IRz5Tio3GA1Xs4fUVWmH1xHDiH2dMbVtCBSkOIdqM=
;; DEBUG: TLS, skipping certificate PIN check
;; DEBUG: TLS, The certificate is trusted.
;; TLS session (TLS1.3)-(ECDHE-X25519)-(ECDSA-SECP256R1-SHA256)-(AES-256-GCM)
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 37809
;; Flags: qr aa rd ra; QUERY: 1; ANSWER: 14; AUTHORITY: 0; ADDITIONAL: 27
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: do; UDP size: 1232 B; ext-rcode: NOERROR
;; PADDING: 303 B
;; QUESTION SECTION:
;; . IN NS
;; ANSWER SECTION:
. 510462 IN NS a.root-servers.net.
. 510462 IN NS b.root-servers.net.
. 510462 IN NS c.root-servers.net.
. 510462 IN NS d.root-servers.net.
. 510462 IN NS e.root-servers.net.
. 510462 IN NS f.root-servers.net.
. 510462 IN NS g.root-servers.net.
. 510462 IN NS h.root-servers.net.
. 510462 IN NS i.root-servers.net.
. 510462 IN NS j.root-servers.net.
. 510462 IN NS k.root-servers.net.
. 510462 IN NS l.root-servers.net.
. 510462 IN NS m.root-servers.net.
. 510462 IN RRSIG NS 8 0 518400 20211027050000 20211014040000 14748 . AyFtsQrpwwSy0+C61ypK1nW1OaCWqVclTERhGgTdDsB5kZ4o2YPt6tIxRKWI3diywnnpl6o5N8qUZMk3EYuVvkznhltcmRkbZkOe+tShhQjyhyVbdGKuNTN/fkfX1Ndgs272oAWDy9UmVksjMcj0APsSk3SGd3saUovorzx0zonKq6i1GBPmDzo3s0SvR52z76H0KYmHNwtlC7r8M6RhNMNzQx8K4PWqklCxsUoBOlfsmiHCBPipHnbDL8NIwsB5QIGeHCpxXn75zRuITNbtpPZYvUNFSy17w5FqphBbytbFGGZmLy5JZxfz1Izq/hOFy1yuzCkK1Z4Lk9XfeM5tIw==
;; ADDITIONAL SECTION:
a.root-servers.net. 510462 IN A 198.41.0.4
a.root-servers.net. 510462 IN AAAA 2001:503:ba3e::2:30
b.root-servers.net. 510462 IN A 199.9.14.201
b.root-servers.net. 510462 IN AAAA 2001:500:200::b
c.root-servers.net. 510462 IN A 192.33.4.12
c.root-servers.net. 510462 IN AAAA 2001:500:2::c
d.root-servers.net. 510462 IN A 199.7.91.13
d.root-servers.net. 510462 IN AAAA 2001:500:2d::d
e.root-servers.net. 510462 IN A 192.203.230.10
e.root-servers.net. 510462 IN AAAA 2001:500:a8::e
f.root-servers.net. 510462 IN A 192.5.5.241
f.root-servers.net. 510462 IN AAAA 2001:500:2f::f
g.root-servers.net. 510462 IN A 192.112.36.4
g.root-servers.net. 510462 IN AAAA 2001:500:12::d0d
h.root-servers.net. 510462 IN A 198.97.190.53
h.root-servers.net. 510462 IN AAAA 2001:500:1::53
i.root-servers.net. 510462 IN A 192.36.148.17
i.root-servers.net. 510462 IN AAAA 2001:7fe::53
j.root-servers.net. 510462 IN A 192.58.128.30
j.root-servers.net. 510462 IN AAAA 2001:503:c27::2:30
k.root-servers.net. 510462 IN A 193.0.14.129
k.root-servers.net. 510462 IN AAAA 2001:7fd::1
l.root-servers.net. 510462 IN A 199.7.83.42
l.root-servers.net. 510462 IN AAAA 2001:500:9f::42
m.root-servers.net. 510462 IN A 202.12.27.33
m.root-servers.net. 510462 IN AAAA 2001:dc3::35
;; Received 1404 B
;; Time 2021-10-14 19:00:55 CEST
;; From 1.1.1.1@853(TCP) in 26.0 ms
[root@IPF ~]#