>Number: 153206
>Category: misc
>Synopsis: "netstat -sz" doesn't reset any IPv6 statistic
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Dec 16 09:00:19 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Dennis Yusupoff
>Release: 8.1-STABLE
>Organization:
SOHO
>Environment:
FreeBSD server.dyr 8.1-STABLE FreeBSD 8.1-STABLE #5: Wed Nov 10 23:34:51 MSK
2010 r...@server.dyr:/usr/obj/usr/src/sys/DYR_SERVER amd64
>Description:
nestat doesn't clear IPv6 statictic, under any circumstates, by using "netstat
-sz" or "netstat -s -z -f inet6".
===
r...@server:/usr/home/dyr (7203) netstat -ssz -f inet6; netstat -ss -f inet6
tcp:
1767 packets sent
243 data packets (32971 bytes)
1212 ack-only packets (0 delayed)
101 window update packets
211 control packets
1490 packets received
404 acks (for 33086 bytes)
14 duplicate acks
1092 packets (1392624 bytes) received in-sequence
7 window update packets
1 packet received after close
101 connection requests
14 connection accepts
102 connections established (including accepts)
116 connections closed (including 0 drops)
15 connections updated cached RTT on close
15 connections updated cached RTT variance on close
13 embryonic connections dropped
402 segments updated rtt (of 402 attempts)
18 retransmit timeouts
2 keepalive timeouts
2 connections dropped by keepalive
918 correct data packet header predictions
14 syncache entries added
14 completed
14 cookies sent
7 SACK options (SACK blocks) received
udp:
438 datagrams received
22 dropped due to no socket
7 broadcast/multicast datagrams undelivered
34 dropped due to full socket buffers
375 delivered
392 datagrams output
ip6:
669902 total packets received
93933 packets for this host
517361 packets forwarded
192733 packets sent from this host
265 multicast packets which we don't join
Input histogram:
TCP: 377282
UDP: 69829
ICMP6: 214085
no next header: 8706
Mbuf statistics:
26188 one mbuf
two or more mbuf:
lo0= 2
643712 one ext mbuf
0 two or more ext mbuf
Source addresses selection rule applied:
111354 first candidate
10366 same address
139781 appropriate scope
135406 outgoing interface
icmp6:
28088 calls to icmp6_error
Output histogram:
unreach: 28088
echo reply: 12
router advertisement: 9185
neighbor solicitation: 52557
neighbor advertisement: 20923
MLDv2 listener report: 22
Input histogram:
echo: 12
router solicitation: 197
router advertisement: 10877
neighbor solicitation: 20923
neighbor advertisement: 37674
Histogram of error messages to be generated:
4635 address unreachable
23453 port unreachable
12 message responses generated
ipsec6:
rip6:
tcp:
11 packets sent
11 data packets (2636 bytes)
3 packets received
3 acks (for 2688 bytes)
2 segments updated rtt (of 1 attempt)
udp:
ip6:
669902 total packets received
93933 packets for this host
517361 packets forwarded
192733 packets sent from this host
265 multicast packets which we don't join
Input histogram:
TCP: 377282
UDP: 69829
ICMP6: 214085
no next header: 8706
Mbuf statistics:
26188 one mbuf
two or more mbuf:
lo0= 2
643712 one ext mbuf
0 two or more ext mbuf
Source addresses selection rule applied:
111354 first candidate
10366 same address
139781 appropriate scope
135406 outgoing interface
icmp6:
28088 calls to icmp6_error
Output histogram:
unreach: 28088
echo reply: 12
router advertisement: 9185
neighbor solicitation: 52557
neighbor advertisement: 20923
MLDv2 listener report: 22
Input histogram:
echo: 12
router solicitation: 197
router advertisement: 10877
neighbor solicitation: 20923
neighbor advertisement: 37674
Histogram of error messages to be generated:
4635 address unreachable
23453 port unreachable
12 message responses generated
ipsec6:
rip6:
===
>How-To-Repeat:
Do netstat -ssz -f inet6; netstat -ss -f inet6 and compare.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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