This is current/amd64. The default output of netstat(1)
contains quite a few lines like the following for the AF_UNIX family:
0x0 stream 0 0 0x0 0x0
0x0 stream 0 0 0x0 0x0
0x0 stream 0 0 0x0 0x0
0x0 stream 0 0 0x0 0x0
0x0 stream 0 0 0x0 0x0
What are these? Are they unnamed pipes opened in some running process?
As opposed to named pipes which have a filename in the last column?
0x0 stream 0 0 0x0 0x0 0x0 0x0 /tmp/aucat/aucat0
The -n apparently displays numerical values not just for addresses,
but also for service names (such as 123, not 'ntp').
Index: netstat.1
===================================================================
RCS file: /cvs/src/usr.bin/netstat/netstat.1,v
retrieving revision 1.72
diff -u -p -r1.72 netstat.1
--- netstat.1 23 Oct 2014 16:45:57 -0000 1.72
+++ netstat.1 22 Feb 2015 13:09:51 -0000
@@ -233,10 +233,9 @@ Show statistics recorded by the memory m
.It Fl N Ar system
Extract the name list from the specified system instead of the running kernel.
.It Fl n
-Show network addresses as numbers (normally
+Show network addresses and service names as numbers (normally
.Nm
-interprets addresses and attempts to display them
-symbolically).
+attempts to display them symbolically).
This option may be used with any of the display formats.
.It Fl P Ar pcbaddr
Display the contents of the socket or protocol control block (PCB)
The -v option should "avoid truncation of long addresses", but e.g.
$ netstat -f inet -v
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp 0 0 lenovo.44110 ea-in-f189.1e100.https ESTABLISHED
tcp 0 0 lenovo.17984 ee-in-f189.1e100.https ESTABLISHED
tcp 0 0 lenovo.12855 prg02s11-in-f16..https ESTABLISHED
tcp 0 0 lenovo.2609 93.99.92.11.www ESTABLISHED
tcp 0 0 lenovo.44964 www.ssh ESTABLISHED
tcp 0 0 lenovo.16097 bbb.ssh ESTABLISHED
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
udp 0 0 lenovo.11880 46.243.48.111.ntp
udp 0 0 lenovo.5564 mail.ctech.tuxin.ntp
udp 0 0 lenovo.43585 46.243.51.55.ntp
udp 0 0 localhost.3393 localhost.3393
Jan
