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Commit Graph

97 Commits

Author SHA1 Message Date
Tim Beale
1906312c09 traffic_replay: Improve user generation debug
When creating 1000s of users you currently get a lot of debug, but at
the same time you have no idea how far through creating the users you
actually are.

Instead of logging every single user account that's created, log every
50th (as well as how far through the overall generation we are).

Logger already includes timestamps, so we can remove generating the
timestamp diff manually. User creation is the slowest operation - adding
groups/memberships is much faster, so we don't need to log as
frequently.

Note that there is a usability trade-off on how frequently we log
depending on whether the user is using the slower (but more common)
method of going via LDAP, vs the much faster (but more obscure) method
of writing directly to sam.ldb with ldb:nosync=true. In my tests, we end
up logging every ~30-ish secs with LDAP, and every ~3 seconds with
direct file writes.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
71c66419bb traffic_replay: Convert print() to logger.info()
Using logger is more helpful here because it includes timestamps, so we
can see how long things are taking. It's also more consistent with the
rest of the traffic_replay logging.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
32e58227cd traffic_replay: Write group memberships once per group
Each user-group membership was being written to the DB in a single
operation. With large numbers of users (e.g. 10,000 in average 15 groups
each), this becomes a lot of operations (e.g. 150,000). This patch
reworks the code so that we write the memberships for a group in
one operation. E.g. instead of 150,000 DB operations, we might make
1,500. This makes writing the group memberships several times
faster.

Note that rthere is a performance vs memory tradeoff. When we hit
10,000+ members in a group, memory-usage in the underlying DB modify
operation becomes very inefficient/costly. So we avoid potential memory
usage problems by writing no more than 1,000 users to a group at once.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
a29ee3a745 traffic_replay: Re-organize assignments to be group-based
We can speed up writing the group memberships by adding multiple users
to a group in a single DB modify operation.

To do this, we first need to reorganize the assignments so instead
of being a set of tuples, it's a dictionary where key=group and
value=list-of-users-in-group.

add_users_to_groups() now iterates through the users/groups slightly
differently, but mostly it's just indentation changes. We haven't
changed the number of DB operations yet - we'll do that in the next
patch.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
5ad7fc7335 traffic_replay: Prevent users having 1000+ memberOf links
When adding 10,000 users, one user would end up in over 1000 groups.
With 100,000 users, it would be more like 10,000 groups. While it makes
sense to have groups with large numbers of users, having a single user
in 1000s of groups is probably less realistic.

This patch changes the shape of the Pareto distribution that we use to
assign users to groups. The aim is to cap users at belonging to at most
~500 groups. Increasing the shape of the Pareto distribution pushes the
user assignments so they're closer to the average, and the tail (with
users in lots of groups) is not so large).

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
fdd75407af traffic_replay: Change user distribution to use Pareto Distribution
The current probability we were assigning to users roughly approximates
the Pareto Distribution (with shape=1.0). This means the code now uses a
documented algorithm (i.e. explanation on Wikipedia). It also allows us
to vary the distribution by changing the shape parameter.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
898e6b4332 traffic_replay: Improve assign_groups() performance with large domains
When assigning 10,000 users to 15 groups each (on average),
assign_groups() would take over 30 seconds. This did not include any DB
operations whatsoever. This patch improves things, so that it takes less
than a second in the same situation.

The problem was the code was looping ~23 million times where the
'random.random() < probability * 10000' condition was not met. The
problem is individual group/user probabilities get lower as the number
of groups/users increases. And so with large numbers of users, most of
the time the calculated probability was very small and didn't meet the
threshold.

This patch changes it so we can select a user/group in one go, avoiding
the need to loop multiple times.

Basically we distribute the users (or groups) between 0.0 and 1.0, so
that each user has their own 'slice', and this slice is proporational to
their weighted probability. random.random() generates a value between
0.0 and 1.0, so we can use this to pick a 'slice' (or rather, we use
this as an index into the list, using .bisect()). Users/groups with
larger probabilities end up with larger slices, so are more likely to
get picked.

The end result is roughly the same distribution as before, although the
first 10 or so user/groups seem to get picked more frequently, so the
weighted-probability calculations may need tweaking some more.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
18740ec0dd traffic_replay: Split out random group membership generation logic
This doesn't change functionality at all. It just moves the probability
calculations out into separate functions.

We want to tweak the logic/implementation behind this code, but the
rest of assign_groups() doesn't really care how the underlying
probabilities are worked out, so long as it gets a suitably random
user/group membership each time round the loop.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:16 +01:00
Tim Beale
e3e84b0f6d traffic_replay: Add helper class for group assignments
Wrap up the group assignment calculations in a helper class. We're going
to tweak the internals a bit in subsequent patches, but the rest of the
code doesn't really need to know about these changes.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-11-04 23:55:15 +01:00
Tim Beale
4943473102 traffic_replay: Change print() to use logger()
This reduces noise, so the messages only come out if you specify
--debug.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-10-31 00:30:16 +01:00
Joe Guo
e8a1773ce2 emulate/traffic: apply new logger to replace print
These print are actually progress infomation, should use logger to
print to stderr, other than stdout.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-10-10 06:16:21 +02:00
Joe Guo
ea6421d734 emulate/traffic: allow traffic_replay to run users and groups generate multiple times
When we run `traffic_replay --generate-users-only`, if we cancel it or
it breaks in middle, it won't do anything when we try to run it again.

This is because the code will check the first user/group to create. If
it's already there, then it thought task already done, and break the loop.

This commit change the behavior:
We search existing users/groups first, skip existing ones, and
create non-existing ones. So we can run it multi-times to make sure the
expected users and groups are actually created.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-10-10 06:16:21 +02:00
Noel Power
2a97996c0a python/samba/emulate: PY3 port of samba.tests.emulate.traffic_packet
Fixes
+ None cannot be used with '<' or '>' operators
+ ord expects 'str'
+ unicode doesn't exist in py3
+ bytes class does not have encode method

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-09-05 23:27:13 +02:00
Joe Guo
7b031b01a1 PEP8: fix E502: the backslash is redundant between brackets
Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-24 07:49:30 +02:00
Joe Guo
211c9a5f85 PEP8: fix E302: expected 2 blank lines, found 1
Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-24 07:49:29 +02:00
Joe Guo
40ef91fb41 PEP8: fix E241: multiple spaces after ','
Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-24 07:49:28 +02:00
Joe Guo
bbb9f57603 PEP8: fix E127: continuation line over-indented for visual indent
Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-24 07:49:26 +02:00
Joe Guo
371c5c70f7 emulate/traffic: add sAMAccountName in create_group
While using script/traffic_replay to generate users and groups, we get
autogenerated group name like:

    $2A6F42B2-39FAF4556E2BE379

This patch specify sAMAccountName to overwriten the name.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-15 07:08:25 +02:00
Joe Guo
68c64c634a traffic: uniform stats output
The original code is trying to output different data format for tty or file.
This is unnecessary and cause confusion while writing script to parse result.

The human-readable one is also easy for code to parse.
Remove if check for isatty(), just make output the same.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-15 07:08:25 +02:00
Joe Guo
8084f1838c emulate/traffic: fix next usage
In commit b0c9de820c, line 343:

    self.next_conversation_id = itertools.count().next

was changed to:

    self.next_conversation_id = next(itertools.count())

which is not correct, the first one is a function, the second one is a
int. This patch fixed it.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13573

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-08-15 07:08:25 +02:00
Noel Power
7d43571169 python/samba/emulate: Fix some more missed exception tuple assignments
In python3 we need to change

    except LdbError as e:
-        (status, _) = e
to
    except LdbError as e:
+        (status, _) = e.args

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-07-13 01:12:24 +02:00
Noel Power
b0c9de820c python/samba/emulate: py2/py3 .next usage, replace with next() fn 2018-06-20 00:18:22 +02:00
Noel Power
9650deee03 python/samba: Py2|Py3 compat, fix more missed exception tuple issues 2018-06-20 00:18:20 +02:00
Joe Guo
d444221d67 traffic: improve add_short_packet by avoiding dict.get
dict.get is slower than [].
Avoid get to improve performance.

(For 3989418 calls, total time decease from 9.395 to 8.573)

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon May 14 05:38:06 CEST 2018 on sn-devel-144
2018-05-14 05:38:06 +02:00
Joe Guo
21c82072ab traffic: optimize packet init for better performance
When we run traffic_replay, we are creating millions of Packet objects.
So small change in Packet.__init__ will make big difference.

By initializing packet with converted values without parsing string, the time
cost for 3961148 calls of Packet.__init__ dcrease from 17s to 4s, according
to cProfile.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-14 02:53:16 +02:00
Joe Guo
2fc6cbb8cb traffic: fix userAccountControl for machine account
change userAccountControl from

UF_WORKSTATION_TRUST_ACCOUNT | UF_PASSWD_NOTREQD

to

UF_TRUSTED_FOR_DELEGATION | UF_SERVER_TRUST_ACCOUNT

This will fix NetrServerPasswordSet2 failure in packet_rpc_netlogon_30
while testing against windows.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-14 02:53:16 +02:00
Joe Guo
72f98f9763 traffic: change machine creds secure channel type
SEC_CHAN_WKSTA --> SEC_CHAN_BDC

This will fix netlogon failure against windows.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-14 02:53:16 +02:00
Joe Guo
38fc8125e2 traffic: improve is_really_a_packet
This function will repeat on each packet.
Avoid exception for getattr, which is expensive for performance.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
c1af6a0dad traffic: improve add_short_packet by avoiding str.split
Avoid str.split, which will repeat for each packet.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
5107e56aa0 traffic: simplify forget_packets_outside_window
Make code compact, and improve performance a little bit.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
4fb5e28b66 traffic: grant user write permission
Some packets need user to have write permission, e.g.: writeaccountspn
Grant user write permission then we can send packets successfully.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
fd2bcd5d10 traffic: set domain on user_creds and machine_creds
The domain is missing in traffic user and machine credential, this will cause
some packet tests fail against windows.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
7c93fb57f5 traffic_packets: provision request data for packet_drsuapi_13
The `drsuapi.DsWriteAccountSpnRequest1` struct in this packet was empty before.
Samba lets it go but Windows will report an invalid parameter error.

Provision the request with proper data, and give user permission to
write account SPN.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
9cabb16b48 traffic_packets: add trailing $ to fix packet_rpc_netlogon_30
For `NetrServerPasswordSet2`, the 2nd arg `account_name` must end with a
$, otherwise windows will return an `Access Denied` error.

Use `creds.get_username()` instead of `creds.get_workstation()` to
include the trailing $.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
eafda9137a traffic_packets: add windows instructions for ldap 0 simple bind
To run packet_ldap_0 simple bind test against Windows, we need to
install CA on Windows with following PowerShell commands:

  Install-windowsfeature ADCS-Cert-Authority
  Install-AdcsCertificationAuthority -CAType EnterpriseRootCA
  Restart-Computer

Otherwise we will get `NT_STATUS_CONNECTION_RESET` error.

Didn't change any code, just add above instructions in comment.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
14af041c13 traffic_packets: replace share_name from netlogon to IPC$ for packet_srvsvc_16
Sharename list for Windows:

    Sharename       Type      Comment
    ---------       ----      -------
    ADMIN$          Disk      Remote Admin
    C$              Disk      Default share
    IPC$            IPC       Remote IPC

For Samba:

    Sharename       Type      Comment
    ---------       ----      -------
    netlogon        Disk
    sysvol          Disk
    IPC$            IPC       IPC Service

While test packet_srvsvc_16 with share_name `netlogon`,
it passed Samba, and got a WERR_NERR_NETNAMENOTFOUND error for Windows.

Change share name to `IPC$` so Samba and Windows have it in common.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:29 +02:00
Joe Guo
51333c1538 traffic_packets: replace level 102 to 101 for packet_srvsvc_21
Level 102 will cause WERR_ACCESS_DENIED error against Windows, because:

    > If the level is 102 or 502, the Windows implementation checks whether
    > the caller is a member of one of the groups previously mentioned or
    > is a member of the Power Users local group.

It passed against Samba since this check is not implemented by Samba yet.

refer to:

    https://msdn.microsoft.com/en-us/library/cc247297.aspx#Appendix_A_80

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:28 +02:00
Joe Guo
34e35c4c80 traffic: add credentials to samr
lp and creds are missing in SamrContext and samr connection.
While run traffic_replay against windows, this will cause
`Access Denied` error.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:28 +02:00
Joe Guo
8d8ef48650 traffic_packets: support NT_STATUS_NO_SUCH_DOMAIN in packet_lsarpc_39
For packet_lsarpc_39, samba will return NT_STATUS_OBJECT_NAME_NOT_FOUND,
however, windows will return NT_STATUS_NO_SUCH_DOMAIN.

Allow both status for now to keep compatiable with both samba and
windows DC.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:28 +02:00
Joe Guo
4d950527f3 traffic: add paged_results control for ldb search
While there are more then 1000 records in the search result from Windows,
a `LDAP_SIZE_LIMIT_EXCEEDED` error will be returned.

Add paged_results control to fix.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-12 02:09:28 +02:00
Douglas Bagnall
2073635d58 traffic: ensure we are using the same division in py 2 and 3
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>

Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Sat May  5 07:25:13 CEST 2018 on sn-devel-144
2018-05-05 07:25:13 +02:00
Joe Guo
5258add3aa python: bulk convert zip to list
In py3, zip will return a iterator other than a list.
Convert it to a list to support both py2 and py3.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-04-13 07:27:12 +02:00
Joe Guo
f3b5287538 python: bulk replace dict.iteritems to items for py3
In py3, iterxxx methods are removed.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-04-13 07:27:12 +02:00
Noel Power
9c251740b4 samba python libs: convert print func to be py2/py3 compatible
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2018-03-23 07:28:23 +01:00
Stefan Metzmacher
1a258b6b0f traffic_packets.py: let Lookup{Sids,Names}() work against a sane server
In order to resolve predefined sids or names we need to use
level = LSA_LOOKUP_NAMES_ALL (1).

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13284

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-02-21 14:19:18 +01:00
Günther Deschner
112938879f python: fix the build with python3.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13221

Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
2018-01-16 16:38:23 +01:00
Gary Lockyer
7057abcfcd scripts: Scripts to replay and generate samba traffic
Scripts to generate representative network traffic and replay this to a
samba instance.  For load testing, performance profiling and capacity
planning.

traffic_learner  process a file generated by traffic_summary and
                 generate a model that can be used by traffic_replay to
                 generate samba network traffic.

traffic_replay   Replay a summary file generated by traffic_summary, or
                 use a model created by traffic_learner to generate
                 network traffic.

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Pair-programmed-with: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Pair-Programmed-With: Tim Beale <timbeale@catalyst.net.nz>
2017-08-17 04:06:06 +02:00