On my platform I have just 16-bit timer clocked at 32kHz. As result oneshot timer max delay is 2s. The patch adds limit of maximum ticks in sched_timer_start (nuttx/sched/sched/sched_timerexpiration.c). From Macs N.

Networking:  Fixes another CONFIG_NET_NOINTS issues.  When called sem_timedwait() with the network locked, the network stays logcked while we wait which is not what we want (without CONFIG_NET_NOINTS, interrupts are re-enabled while we wait and all is well).

Auto neighbor solicitation is no longer EXPERIMENTAL and is the default for the DK-TM4C129X/ipv6 configuration

ICMPv6: Adds basic logic to support verification that we have the IPv6 address in the Neighbor Table.  This feature is important because otherwise the first packet sent to a remote peer will fail (it will be replaced with a Neighbor Solicitation).

IPv6: More framework for automatic neighbor solicition.  I think this also corrects and error in a broadcast/multicast address chedk

IPv6: Remove an unusd file (kruft from original IPv6 develoment); Add inital hooks to support automatic Neighbor Solitication

Unix domain:  Enable logic to clean up the FIFOs underlying stream sockets with those sockets are disconnected.  Tehre is still no corresponding clean-up logic in place for Unix domain datagram sockets because the life of the FIFO is not as well known in that case

drivers/ramdisk.c and include/nuttx/fs/ramdisk.h:  Add logic to dispose of the drvier and RAM buffer when the RAM disk has been unlinked and all open references to the RAM disk have been closed.  Add new parameters to romdisk() to specify what should be done with the RAM/ROM buffer -- Should it be freed or not?  Changed all calls to ramdisk() to use these new parameters.

Moteino Mega:  Rename files to conform to newer standards.  Need to fix all of the old configurations someday