Всё же в момент возникновения проблем, потеря пакетов идёт.
andrew@andrew-laptop:~$ ping ya.ru
PING ya.ru (213.180.204.

56(84) bytes of data.
64 bytes from ya.ru (213.180.204.

: icmp_seq=1 ttl=59 time=3.71 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=2 ttl=59 time=3.44 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=3 ttl=59 time=26.9 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=4 ttl=59 time=18.4 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=5 ttl=59 time=25.9 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=11 ttl=59 time=4.01 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=12 ttl=59 time=4.65 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=13 ttl=59 time=3.75 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=14 ttl=59 time=3.59 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=15 ttl=59 time=20.4 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=16 ttl=59 time=21.9 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=17 ttl=59 time=20.4 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=18 ttl=59 time=24.9 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=19 ttl=59 time=16.0 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=20 ttl=59 time=13.2 ms
64 bytes from ya.ru (213.180.204.

: icmp_seq=21 ttl=59 time=3.50 ms
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
^C
--- ya.ru ping statistics ---
43 packets transmitted, 16 received, 62% packet loss, time 69231ms
rtt min/avg/max/mdev = 3.448/13.443/26.984/9.101 ms