Bug#763606: Confirmation

["Josep M. Perez" <josep.m.perez@gmail.com>]

Dear maintainers,

I have the same exact problem. I have a bridge over an ethernet NIC and an OpenVPN tap interface. Kernel 3.14-2-powerpc works correctly and 3.16-[23]—powerpc do not. The remote openvpn host can reach the bridge interface correctly and thus communicate with the host. However any other access of the remote host that should be forwarded from the openvpn tap interface through the ethernet interface does not work.

I have used netsniff-ng over the remote tap interface, the local tap interface, the local bridge interface, and the local ethernet interface while making a DHCP request from the remote host that should be forwarded to the local network. In all cases the request packet was visible, but not the response.

Find below some of the hardware details of my system just in case it helps.

----- /proc/cpuinfo -----
  processor	: 0
  cpu		: 7447A, altivec supported
  clock		: 1333.333328MHz
  revision	: 1.5 (pvr 8003 0105)
  bogomips	: 83.20
  timebase	: 41600661
  platform	: PowerMac
  model		: PowerMac10,2
  machine		: PowerMac10,2
  motherboard	: PowerMac10,2 MacRISC3 Power Macintosh 
  detected as	: 287 (Mac mini (Late 2005))
  pmac flags	: 00000010
  L2 cache	: 512K unified
  pmac-generation	: NewWorld
  Memory		: 1024 MB
----- /proc/cpuinfo end -----

08: PCI 2200b.0: 0600 Host bridge
  [Created at pci.328]
  Unique ID: 7rcY.vkm17Jxs1m3
  SysFS ID: /devices/pci0002:20/0002:20:0b.0
  SysFS BusID: 0002:20:0b.0
  Hardware Class: bridge
  Model: "Apple UniNorth 2 Internal PCI"
  Vendor: pci 0x106b "Apple Inc."
  Device: pci 0x0036 "UniNorth 2 Internal PCI"
  Module Alias: "pci:v0000106Bd00000036sv00000000sd00000000bc06sc00i00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

11: PCI 2200f.0: 0200 Ethernet controller
  [Created at pci.328]
  Unique ID: rBUF.nAQ7Jnazou0
  SysFS ID: /devices/pci0002:20/0002:20:0f.0
  SysFS BusID: 0002:20:0f.0
  Hardware Class: network
  Model: "Apple UniNorth 2 GMAC (Sun GEM)"
  Vendor: pci 0x106b "Apple Inc."
  Device: pci 0x0032 "UniNorth 2 GMAC (Sun GEM)"
  Revision: 0x80
  Driver: "gem"
  Driver Modules: "sungem"
  Device File: eth0
  Memory Range: 0xf5200000-0xf53fffff (rw,non-prefetchable)
  Memory Range: 0xf5100000-0xf51fffff (ro,non-prefetchable,disabled)
  IRQ: 41 (7184 events)
  HW Address: 00:11:24:*:*:*
  Link detected: yes
  Module Alias: "pci:v0000106Bd00000032sv00000000sd00000000bc02sc00i00"
  Driver Info #0:
    Driver Status: sungem is active
    Driver Activation Cmd: "modprobe sungem"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

12: PCI 11017.0: ff00 Unclassified device
  [Created at pci.328]
  Unique ID: tO0B.wjNr0SYqtL5
  SysFS ID: /devices/pci0001:10/0001:10:17.0
  SysFS BusID: 0001:10:17.0
  Hardware Class: unknown
  Model: "Apple KeyLargo/Intrepid Mac I/O"
  Vendor: pci 0x106b "Apple Inc."
  Device: pci 0x003e "KeyLargo/Intrepid Mac I/O"
  Driver: "macio"
  Memory Range: 0x80000000-0x8007ffff (rw,non-prefetchable)
  Module Alias: "pci:v0000106Bd0000003Esv00000000sd00000000bcFFsc00i00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

15: PCI 1100b.0: 0600 Host bridge
  [Created at pci.328]
  Unique ID: zM3W.OKqHekp9WN3
  SysFS ID: /devices/pci0001:10/0001:10:0b.0
  SysFS BusID: 0001:10:0b.0
  Hardware Class: bridge
  Model: "Apple UniNorth 2 PCI"
  Vendor: pci 0x106b "Apple Inc."
  Device: pci 0x0035 "UniNorth 2 PCI"
  Module Alias: "pci:v0000106Bd00000035sv00000000sd00000000bc06sc00i00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown


Cheers,
Josep M. Perez