[pkg-gnupg-maint] Bug#840680: dirmngr: Dirmngr not always responding

[Craig Small]

Package: dirmngr
Version: 2.1.15-4
Followup-For: Bug #840680

Possibly the same problem but --send-keys hangs most of the time and
never times out. At the same time dirmngr-client --ping also hangs.

I never seen so many ENOSYS before, this is stracing an existing
dirmngr so perhaps its the strace that is strange:

write(5, "conn fd=4", 9)                = -1 ENOSYS (Function not implemented)
close(5)                                = -1 ENOSYS (Function not implemented)
futex(0x7f8bdf71e200, FUTEX_WAKE_PRIVATE, 1) = -1 ENOSYS (Function not implemented)
pselect6(4, [3], NULL, NULL, {1, 998948396}, {[], 8}) = -1 ENOSYS (Function not implemented)
futex(0x7f8bdf71e200, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, ffffffff) = -1 ENOSYS (Function not implemented)


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/6 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages dirmngr depends on:
ii  adduser        3.115
ii  libassuan0     2.4.3-1
ii  libc6          2.24-5
ii  libgcrypt20    1.7.3-2
ii  libgnutls30    3.5.5-2
ii  libgpg-error0  1.24-1
ii  libksba8       1.3.5-2
ii  libldap-2.4-2  2.4.42+dfsg-2+b3
ii  libnpth0       1.2-3
ii  lsb-base       9.20161016

Versions of packages dirmngr recommends:
ii  gnupg  2.1.15-4

Versions of packages dirmngr suggests:
pn  tor  <none>

-- no debconf information