Установлены и настроены платы OpenVоx a1200P и a800P
Версии Астериска, dahdi и dahdi-tools такие:

localhost ~ # emerge -pv asterisk dahdi dahdi-tools

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild R ] net-misc/dahdi-2.2.0.2 0 kB [1]
[ebuild R ] net-misc/dahdi-tools-2.2.0 0 kB [1]
[ebuild R ] net-misc/asterisk-1.6.1.6 USE="alsa caps curl dahdi freetds h323 iconv speex vorbis -debug -imap -jabber -keepsrc -ldap -misdn -newt -nosamples -odbc -oss -postgres -radius -snmp -span -sqlite -ssl* -static" 0 kB [0]

Total: 3 packages (3 reinstalls), Size of downloads: 0 kB
Portage tree and overlays:
[0] /usr/portage
[1] /home/gentoo/layman/voip

* IMPORTANT: 2 news items need reading for repository 'gentoo'.
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Астериск при включении и в процессе работы вываливает:

Oct 20 18:03:24 localhost kernel: buffer re-sync occur from -1 to 2
Oct 20 18:03:28 localhost kernel: buffer re-sync occur from 2 to 1
Oct 20 18:03:28 localhost kernel: buffer re-sync occur from 1 to 2
Oct 20 18:03:28 localhost kernel: buffer re-sync occur from 2 to 1
Oct 20 18:03:29 localhost kernel: buffer re-sync occur from 1 to 0
Oct 20 18:03:31 localhost kernel: buffer re-sync occur from 1 to 0
Oct 20 18:03:35 localhost kernel: buffer re-sync occur from 0 to 3
Oct 20 18:03:35 localhost kernel: buffer re-sync occur from 3 to 1
Oct 20 18:03:40 localhost kernel: buffer re-sync occur from 1 to 0
Oct 20 18:03:42 localhost kernel: buffer re-sync occur from 0 to 3
Oct 20 18:03:43 localhost kernel: buffer re-sync occur from 3 to 2
Oct 20 18:03:45 localhost kernel: buffer re-sync occur from 2 to 0
Oct 20 18:03:49 localhost kernel: buffer re-sync occur from 0 to 3
Oct 20 18:03:52 localhost kernel: buffer re-sync occur from 3 to 1
Oct 20 18:04:00 localhost kernel: buffer re-sync occur from 1 to 0
Oct 20 18:04:01 localhost kernel: buffer re-sync occur from 0 to 2

В принципе, система работает. Насколько это опасно и как исправить ситуацию?