Comment 0 for bug 1836929

Checking last eoan merge I realized that some tests were failing for chrony:

https://code.launchpad.net/~paelzer/ubuntu/+source/chrony/+git/chrony/+merge/369588/comments/967625

But eoan ran autopkgtests okay when the trigger was chrony/3.5-2ubuntu2 (this last merge):

http://autopkgtest.ubuntu.com/packages/chrony/eoan/amd64

Despite having failed for the previous 12 times (eoan).

Now, for the first time, we have the same failure for disco:

http://autopkgtest.ubuntu.com/packages/chrony/disco/amd64

http://bit.ly/2LpMx4G

"""
make: Leaving directory '/tmp/autopkgtest.pBHSAl/build.WCD/src/test/simulation/clknetsim'
...
110-chronyc .................... PASS
111-knownclient xxxxxxxxxxxxxxxxxxxx FAIL
112-port xxxxxxxxxxxxxxxxxxxx FAIL
121-orphan .................... PASS
...
SUMMARY:
  TOTAL 50
  PASSED 48
  FAILED 2 (111-knownclient 112-port) (255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 265)
"""

And I'm able to reproduce locally:

(c)inaddy@iproute2verification:~/work/sources/ubuntu/chrony/test/simulation$ ./111-knownclient
Testing reply to client configured as server:
  network with 1*1 servers and 1 clients:
    non-default settings:
      client_conf=acquisitionport 123
      server_conf=server 192.168.123.2 noselect acquisitionport 123
    starting node 1: OK
    starting node 2: OK
    running simulation: OK
    checking chronyd exit:
      node 1: OK
      node 2: OK
    checking source selection:
      node 2: OK
    checking port numbers in packet log:
      node 1: BAD
      node 2: BAD
FAIL

AND

(c)inaddy@iproute2verification:~/work/sources/ubuntu/chrony/test/simulation$ ./112-port
Testing port and acquisitionport directives:
  network with 1*1 servers and 1 clients:
    non-default settings:
    starting node 1: OK
    starting node 2: OK
    running simulation: OK
    checking chronyd exit:
      node 1: OK
      node 2: OK
    checking source selection:
      node 2: OK
    checking mean/min incoming/outgoing packet interval:
      node 1: 2.74e+02 2.74e+02 6.40e+01 6.40e+01 OK
      node 2: 2.74e+02 2.74e+02 6.40e+01 6.40e+01 OK
    checking clock sync time, max/rms time/freq error:
      node 2: 132 9.29e-05 1.21e-06 5.77e-05 1.01e-07 OK
    checking port numbers in packet log:
      node 1: BAD
      node 2: BAD
  network with 1*1 servers and 1 clients:
    non-default settings:
      client_conf=acquisitionport 123
    starting node 1: OK
    starting node 2: OK
    running simulation: OK
    checking chronyd exit:
      node 1: OK
      node 2: OK
    checking port numbers in packet log:
      node 1: BAD
      node 2: BAD
FAIL