I have a strange networking problem. There is something wrong between my host (Debian wheezy) and a VPS (Debian squeeze). Everything has been working great until approximately yesterday; now ssh connections only work for a short time. I have reduced to minimal firewalls on both systems, and another host on the same local network works fine. The most obvious symptom is this (domains and IPs redacted): $ time ping -c1 vps-fqdn PING vps-fqdn (64.n.n.n) 56(84) bytes of data. 64 bytes from 64.n.n.n: icmp_req=1 ttl=43 time=60.1 ms --- vps-fqdn ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 60.156/60.156/60.156/0.000 ms real 0m5.145s user 0m0.000s sys 0m0.000s Why does it take 5 seconds to receive a 60 ms ping reply? Also, if I hit ^C quickly: time ping -c1 vps-fqdn PING vps-fqdn (64.n.n.n) 56(84) bytes of data. ^C64 bytes from 64.n.n.n: icmp_req=1 ttl=43 time=51.6 ms --- vps-fqdn ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 51.611/51.611/51.611/0.000 ms real 0m0.300s user 0m0.000s sys 0m0.000s Why does ping not display the ping-reply immediately and exit? Thanks
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