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Old 31st March 2015
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jggimi jggimi is offline
More noise than signal
 
Join Date: May 2008
Location: USA
Posts: 6,256
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Name resolution has nothing to do with 100% packet loss. More likely, there's a block rule in PF preventing ICMP packets from passing. But even if it's something else, the tcpdump(8) program can help you determine a root cause.
  • If you add logging to your pass and block rules, you can use tcpdump(8) with your pflog(4) device and watch for passed/blocked traffic.
  • If traffic is correctly passed but no responses are being received, you can use tcpdump(8) with your gif(4) interface to monitor traffic.
  • Does an ARP request get sent?
  • Was an ARP reply received?
  • Do you see the ping requests?
  • Do you see any replies?
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