Would it be possible for you to test the latest upstream stable kernel?
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the
latest v4.4 stable kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, 
please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as 
"Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.115


** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Xenial)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Tags added: performing-bisect

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You received this bug notification because you are a member of नेपाली
भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1749143

Title:
  BUG: unable to use fping: 127.0.0.1: error while sending ping: Bad
  address

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Xenial:
  Confirmed

Bug description:
  Hello,

  We test the -proposed packages before our ±25000 user servers get a
  chance to download it when it's in stable and we have an issue since
  the package linux-image-4.4.0-113-generic and linux-
  image-4.4.0-115-generic.

  We tried on KVM virtual machines

  To reproduce the problem, execute:

      # fping -t50 -r2 127.0.0.1
      127.0.0.1: error while sending ping: Bad address
      127.0.0.1: error while sending ping: Bad address
      127.0.0.1: error while sending ping: Bad address
      127.0.0.1 is unreachable

  We have no problem with ping:

      # ping -c 1 127.0.0.1
      PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
      64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.046 ms
      
      --- 127.0.0.1 ping statistics ---
      1 packets transmitted, 1 received, 0% packet loss, time 0ms
      rtt min/avg/max/mdev = 0.046/0.046/0.046/0.000 ms

  fping is working fine under kernel 4.4.0-112:

      # fping -t50 -r2 127.0.0.1
      127.0.0.1 is alive

  Distributor ID:       Ubuntu
  Description:  Ubuntu 16.04.3 LTS
  Release:      16.04
  Codename:     xenial
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 févr. 13 16:40 seq
   crw-rw---- 1 root audio 116, 33 févr. 13 16:40 timer
  AplayDevices: Error: [Errno 2] Aucun fichier ou dossier de ce type
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] Aucun fichier ou dossier de ce type
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=/dev/mapper/eolebase--vg-swap_1
  IwConfig: Error: [Errno 2] Aucun fichier ou dossier de ce type
  Lsusb:
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  Package: linux (not installed)
  PciMultimedia:
   
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-115-generic 
root=/dev/mapper/hostname--vg-root ro rootdelay=90
  ProcVersionSignature: Ubuntu 4.4.0-115.139-generic 4.4.98
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-115-generic N/A
   linux-backports-modules-4.4.0-115-generic  N/A
   linux-firmware                             1.157.16
  RfKill: Error: [Errno 2] Aucun fichier ou dossier de ce type
  Tags:  xenial
  Uname: Linux 4.4.0-115-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 04/01/2014
  dmi.bios.vendor: SeaBIOS
  dmi.bios.version: Ubuntu-1.8.2-1ubuntu1
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-i440fx-xenial
  dmi.modalias: 
dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-xenial:cvnQEMU:ct1:cvrpc-i440fx-xenial:
  dmi.product.name: Standard PC (i440FX + PIIX, 1996)
  dmi.product.version: pc-i440fx-xenial
  dmi.sys.vendor: QEMU

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