Bug 61768

1 day ag0 my freebsd machine after 20days of uptime ,crash without a reason.i read the log messages,and i see that problem:
Jan 22 20:49:41 GASPOTB dhclient: send_packet: Address family not supported by protocol family
Jan 22 20:50:23 GASPOTB last message repeated 3 times
Jan 22 20:50:30 GASPOTB dhclient: send_packet: Address family not supported by protocol family
Jan 22 20:54:07 GASPOTB last message repeated 4 times
Jan 22 20:54:15 GASPOTB dhclient: New Network Number: 23.252.144.0
Jan 22 20:54:15 GASPOTB dhclient: New Broadcast Address: 255.255.255.255
Jan 22 20:54:20 GASPOTB dhclient: send_packet: Address family not supported by protocol family
Jan 22 20:54:33 GASPOTB dhclient: send_packet: Address family not supported by protocol family
Jan 22 21:01:40 GASPOTB dhclient: send_packet: Address family not supported by protocol family

this ERROR from 20:49:41 (last reboot is at Jan 22 20:29:26)
but from  20:29:36 i have that error..after 2,3 hours
Jan 22 23:15:13 GASPOTB dhclient: send_packet: Address family not supported by protocol family
Jan 22 23:15:43 GASPOTB last message repeated 4 times
Jan 22 23:15:49 GASPOTB /kernel: kern.maxfiles limit exceeded by uid 1000, please see tuning(7).
Jan 22 23:16:00 GASPOTB dhclient: send_packet: Address family not supported by protocol family
and also:
Jan 22 23:29:33 GASPOTB sm-msp-queue[572]: i0MMTWAP000572: SYSERR(UID0): fill_fd: disconnect: fd 0
 not open: Bad file descriptor
Jan 22 23:29:33 GASPOTB sm-msp-queue[572]: i0MMTWAP000572: SYSERR(UID0): fill_fd: disconnect: cann
ot open /dev/null: Too many open files in system.

Fix: 

dont know
How-To-Repeat: dont know if i reboot my sistem after 2,3 hours will be crash and kernel have to many file open,I have test to change the ,maxfile process with sysctl,but crash like befor.