Vypadli jim IPv4 DNS zaznamy..
Ti co uz jedou na IPv6 jedou stale dal :)
DNS od o2 opravdu nevraci zadnej IPv4 zaznam pro www.facebook.com, ale IPv6 v pohode
petrkr@localhost ~ $ ping www.facebook.com
ping: unknown host www.facebook.com
petrkr@localhost ~ $ ping6 www.facebook.com
PING www.facebook.com(www6-slb-11-12-prn1.facebook.com) 56 data bytes
64 bytes from www6-slb-11-12-prn1.facebook.com: icmp_seq=1 ttl=49 time=184 ms
64 bytes from www6-slb-11-12-prn1.facebook.com: icmp_seq=2 ttl=49 time=185 ms
--- www.facebook.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 184.487/185.099/185.712/0.748 ms
ale staci si nastavit DNS na Google tj 8.8.8.8 nebo 8.8.4.4