Ping не работает для пользователя без полномочий root.
[ethan@EthanPC yaourt]$ ping -c 3 www.bing.com
ping: unknown host www.bing.com
[root@EthanPC yaourt]# ping -c 3 www.bing.com
PING any.edge.bing.com (204.79.197.200) 56(84) bytes of data.
64 bytes from a-0001.a-msedge.net (204.79.197.200): icmp_seq=1 ttl=117 time=14.5 ms
64 bytes from a-0001.a-msedge.net (204.79.197.200): icmp_seq=2 ttl=117 time=18.3 ms
64 bytes from a-0001.a-msedge.net (204.79.197.200): icmp_seq=3 ttl=117 time=17.5 ms
--- any.edge.bing.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 14.546/16.819/18.377/1.647 ms
Я использую Arch Linux. Есть идеи?