FG

So port is not unique by machine at all?

Fresh3 days ago
Mar 15, 20261029 views
Confidence Score0%
0%

Problem

Is it by IP, by protocol or by any other dimensions?

Error Output

$ lsof

memcached 15844 root   28u  IPv6     113604       TCP *:11051 (LISTEN)
memcached 15844 root   29u  IPv4     113605       TCP *:11051 (LISTEN)…

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1 Fix

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Fix for: So port is not unique by machine at all?

Low Risk

The same port number can be used once for TCP and once for UDP, and each of these exists on IPv4 and IPv6. TCP and UDP port numbers are an entirely different number spaces, they just happen to be assigned in pairs and applications that need both usu…

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Environment