problem s BINDem

[Miroslav Lachman]

Dan Lukes wrote on 2019/04/28 20:07:

> A BIND posloucha na jednotlivych adresach (alespon u me a nepamatuju se, 
> ze bych se takove chovani snazil explicitne dosahnout).

Ano, i u me BIND posloucha na jednotlivych adresach a i kdyz jsem se ho 
vcera pokousel premluvit, aby poslouchal na wildcard *:53, tak se mi to 
nepodarilo

> V pozadi zatim ael je jedna jistota - primarne by adresa z interface 
> nemela mizet. Adresa se typicky prodluzuje v 80% doby predchoziho lease, 
> takze dostatecne vcas na to, aby se zapujcka proste prodlouzila. Adresa 
> by nemela z interface mizet a znovu se objevovat.

Prohledal jsem log z monitoringu, kdy prestal BIND odpovidat a k tomu 
pak projel messages na stroji s BINDem, jeden priklad vypada takhle:

Apr 13 03:06:15 XXXX dhclient[2281]: send_packet: Permission denied
Apr 13 03:06:44 XXXX dhclient[2281]: send_packet: Permission denied
Apr 13 03:08:26 XXXX last message repeated 4 times
Apr 13 03:10:20 XXXX last message repeated 2 times
Apr 13 03:11:20 XXXX dhclient[2281]: send_packet: Permission denied
Apr 13 03:13:28 XXXX dhclient[2281]: send_packet: Permission denied
Apr 13 05:46:40 XXXX dhclient: New IP Address (bge0): AA.BB.CC.32
Apr 13 05:46:40 XXXX dhclient: New Subnet Mask (bge0): 255.255.255.0
Apr 13 05:46:40 XXXX dhclient: New Broadcast Address (bge0): 255.255.255.255
Apr 13 05:46:40 XXXX dhclient: New Routers (bge0): AA.BB.CC.1
Apr 13 06:16:40 XXXX dhclient[2281]: send_packet: Permission denied
Apr 13 06:17:09 XXXX last message repeated 3 times
Apr 13 06:18:59 XXXX last message repeated 2 times


Tech zaznamu "send_packet: Permission denied" je plny log, ale podle 
nejakych informaci na netu by to "nemelo vadit", ackoliv presne nevim, 
co to znamena. Stroj IP pomoci DHCP uspesne dostava a v tech 05:46:40 
doslo k obnove adresy, kterou ten stroj mel i pred tim.

Mirek