'No buffer space available' messages from ral0 device

[Yuri]

After I had 'wget' running for a while ral device became irresponsive 
and kept printing those messages:
Jul  5 00:30:45 eagle dhcpcd[22608]: ral0: timed out
Jul  5 00:30:45 eagle dhcpcd[22608]: ral0: lease expired 48949 seconds ago
Jul  5 00:30:45 eagle dhcpcd[22608]: ral0: writev: No buffer space available
Jul  5 00:31:03 eagle last message repeated 7 times
Jul  5 00:31:05 eagle dhcpcd[22608]: ral0: timed out
Jul  5 00:31:05 eagle dhcpcd[22608]: ral0: lease expired 48969 seconds ago
Jul  5 00:31:05 eagle dhcpcd[22608]: ral0: writev: No buffer space available
Jul  5 00:31:23 eagle last message repeated 7 times

After I put it down/up and set it up again it worked fine again.

Is this a known problem? Any workaround?

Yuri