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Operating Systems OS X (Apple) Cannot access UNIX.com with new cable modem Post 302442639 by Neo on Thursday 5th of August 2010 03:37:45 AM
Old 08-05-2010
Ah! Sorry, I misread your post.

If you can't ping or traceroute to this site, but can get to the rest of the world, and since DNS is obviously working, seems the problem might be in your Mac somewhere. I have had problems on my Mac from time to time that required a reboot and it still did not clear until some unknown TTL passed (still have not got a handle on it).

Still, you should either ping and record the route or use traceroute and determine the last IP address you can hop to and then look into that device for the problem. Please post back what device is the last device there the datagram resides.
 

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TRACEROUTE(1)                                                      User Commands                                                     TRACEROUTE(1)

NAME
traceroute - Trace the route to a host SYNOPSIS
traceroute [OPTION...] HOST DESCRIPTION
Print the route packets trace to network host. -f, --first-hop=NUM Set initial hop distance, that is the time-to-live. -g, --gateways=GATES List of gateways for loose source routing. -I, --icmp Use ICMP ECHO as probe. -m, --max-hop=NUM Set maximal hop count (default is 64). -M, --type=METHOD Use METHOD (icmp or udp) for traceroute operations, defaulting to udp. -p, --port=PORT Use destination PORT port (default is 33434). -q, --tries=NUM Send NUM probe packets per hop (default is 3). --resolve-hostnames Resolve hostnames. -t, --tos=NUM Set type of service (TOS) to NUM. -w, --wait=NUM Wait NUM seconds for response (default is 3). -?, --help Give this help list. --usage Give a short usage message. -V, --version Print program version. GNU inetutils 2015-05-15 TRACEROUTE(1)
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