MFC r253404:
   o TxD ring requires 8 bytes alignment to work so change alignment
     constraint to 8. Previously it may have triggered watchdog
     timeouts.
   o Check whether interrupt is ours or not.
   o Enable interrupts before attemping to transmit queued packets.
     This will slightly improve TX performance.
   o No need to clear IFF_DRV_OACTIVE in a loop. AE_FLAG_TXAVAIL is
     used to know whether there are enough available TxD ring space.
   o Added missing bus_dmamap_sync(9) in ae_rx_intr() and rearranged
     code to avoid unncessary register access.
   o Make sure to clear TxD, TxS, RxD rings in driver initialization.
     Otherwise some data in these rings could be interpreted as
     'updated' which in turn will advance internally maintained
     pointers and can trigger watchdog timeouts.

  PR:	kern/180382
  Approved by:	re (hrs)
MFC r253532:

Fix an XHCI regression:

The Block Event Interrupts, BEI, feature does not
work like expected with the Renesas XHCI chipsets.
Revert feature.

While at it correct the TD SIZE computation in
case of Zero Length Packet, ZLP, in the end of a
multi frame USB transfer.

PR:             usb/180726
Approved by:    re, hrs
MFC 253262, 253318, 243184, 253444, 253505, 253520:

- Add a leaf node CTL_NET.PF_ROUTE.0.AF.NET_RT_DUMP.0.FIB.  This returns
  routing table with the specified FIB number, not td->td_proc->p_fibnum.

- Add check_namevarlist() to check if ${name}_var is reserved in
  rc.subr or not.

- Fix a bug in ipv6_prefix_IF.  It did not work with the 64-bit prefix
  notation like 2001:db8:1:1.

- Use eui64 flag in ifconfig(8) instead of network6_getladdr()[*] for
  interface indentifier part.

- Fix address range specification with ifconfig(8) options such as:

  * inet 192.0.2.1-10 netmask 255.255.255.0 (inet range spec + ifconfig options)
  * inet6 2001:db8:1::1-f prefixlen 60 (inet6 range spec + ifconfig options)

  If prefixlen or netmask option is specified with CIDR notation at
  the same time, the option is used.

-  Do not set ND6_IFF_ACCEPT_RTADV on if_bridge(4) interfaces when
   ipv6_enable=yes.

Approved by:	re (marius)
Fix Denial of Service vulnerability in named(8). [13:07]

Security:	CVE-2013-4854
Security:	FreeBSD-SA-13:07.bind
Approved by:	re (rodrigc)
Update stable/9 branch to -BETA2 status.

Approved by:	re (implicit)
Approved by:	kib (mentor, implicit)
Merge remote-tracking branch 'upstream-github/stable/9' into stable/9