narazili jsme na problem s DNS. Pokud pingneme domenu google.com, tak
dostavame odpoved viz nize.
ping google.com
PING google.com (195.113.214.234) 56(84) bytes of data.
64 bytes from goooooooooooooooooooooooooooooooooooooooooogle.cesnet.cz
(195.113.214.234): icmp_req=1 ttl=58 time=1.10 ms
64 bytes from goooooooooooooooooooooooooooooooooooooooooogle.cesnet.cz
(195.113.214.234): icmp_req=2 ttl=58 time=1.05 ms
^C
--- google.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 1.052/1.077/1.103/0.041 ms
nekdo@nekde ~/temp/data-storage $ nslookup
195.113.214.234
Server: 147.32.96.1
Address: 147.32.96.1#53
Non-authoritative answer:
234.214.113.195.in-addr.arpa name =
goooooooooooooooooooooooooooooooooooooooooogle.cesnet.cz.
Authoritative answers can be found from:
214.113.195.in-addr.arpa nameserver = nsa.ces.net.
214.113.195.in-addr.arpa nameserver = nsa.cesnet.cz.
V pripade, ze nechame resolvnout domenu pomoci 4.2.2.2, tak je to v poradku, ale pri pouziti 8.8.8.8 dostavame opet spatne odpovedi
nekdo@nekde ~/temp/data-storage $ nslookup google.com
4.2.2.2
Server: 4.2.2.2
Address: 4.2.2.2#53
Non-authoritative answer:
Name: google.com
Address: 173.194.112.238
Name: google.com
Address: 173.194.112.232
Name: google.com
...
nekdo@nekde ~/temp/data-storage $ nslookup google.com
8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: google.com
Address: 195.113.214.226
Name: google.com
Address: 195.113.214.222
Name: google.com
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