Hello,
we are using unbound in our environment. I recently looked into the
logfile and found many of those lines:
"""
[1289226893] unbound[5117:1] notice: sendmsg failed: Resource
temporarily unavailable
[1289226893] unbound[5117:1] notice: remote address is xxx.xxx.xxx.xxx
port 53588
"""
What is the meaning of those lines? Is there perhaps a performance
issue?
Some infos about unbound (it is the debian squeeze package):
Version 1.4.6
linked libs: libev 3.9 (it uses epoll), ldns 1.4.0, OpenSSL 0.9.8o 01
Jun 2010
linked modules: validator iterator
configured for x86_64-pc-linux-gnu on Sun Aug 15 22:32:30 UTC 2010 with
options: '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=
${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=
${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var'
'--libexecdir=${prefix}/lib/unbound' '--disable-maintainer-mode'
'--disable-dependency-tracking' '--disable-rpath'
'--with-chroot-dir=/var/lib/unbound'
'--with-pidfile=/var/run/unbound.pid' '--with-libevent'
BSD licensed, see LICENSE in source package for details.
Report bugs to [email protected]
Another problem I have is a "SERVFAIL" with the domain "imgw.pl".
I do this query with dig on our unbound host (with allow_snoop option
set):
$> dig @localhost +trace imgw.pl
and get:
"""
; <<>> DiG 9.6-ESV-R1 <<>> +trace @localhost imgw.pl
; (1 server found)
;; global options: +cmd
. 518399 IN NS a.root-servers.net.
. 518399 IN NS h.root-servers.net.
. 518399 IN NS b.root-servers.net.
. 518399 IN NS d.root-servers.net.
. 518399 IN NS e.root-servers.net.
. 518399 IN NS l.root-servers.net.
. 518399 IN NS f.root-servers.net.
. 518399 IN NS i.root-servers.net.
. 518399 IN NS j.root-servers.net.
. 518399 IN NS g.root-servers.net.
. 518399 IN NS c.root-servers.net.
. 518399 IN NS m.root-servers.net.
. 518399 IN NS k.root-servers.net.
;; Received 500 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms
pl. 172800 IN NS a-dns.pl.
pl. 172800 IN NS c-dns.pl.
pl. 172800 IN NS d-dns.pl.
pl. 172800 IN NS e-dns.pl.
pl. 172800 IN NS f-dns.pl.
pl. 172800 IN NS g-dns.pl.
pl. 172800 IN NS h-dns.pl.
pl. 172800 IN NS i-dns.pl.
;; Received 399 bytes from 193.0.14.129#53(k.root-servers.net) in 6 ms
imgw.pl. 86400 IN NS krgw1.imgw.pl.
imgw.pl. 86400 IN NS wagw1.imgw.pl.
;; Received 97 bytes from 195.80.237.162#53(e-dns.pl) in 40 ms
;; connection timed out; no servers could be reached
Segmentation fault
"""
If I drop the "+trace" option I just receive a "SERVFAIL" answer.
If I do this on my local machine (no unbound):
"""
; <<>> DiG 9.5.1-P2.1 <<>> +trace imgw.pl
;; global options: printcmd
. 84891 IN NS c.root-servers.net.
. 84891 IN NS a.root-servers.net.
. 84891 IN NS g.root-servers.net.
. 84891 IN NS f.root-servers.net.
. 84891 IN NS e.root-servers.net.
. 84891 IN NS l.root-servers.net.
. 84891 IN NS m.root-servers.net.
. 84891 IN NS j.root-servers.net.
. 84891 IN NS b.root-servers.net.
. 84891 IN NS h.root-servers.net.
. 84891 IN NS d.root-servers.net.
. 84891 IN NS i.root-servers.net.
. 84891 IN NS k.root-servers.net.
;; Received 449 bytes from 192.168.2.1#53(192.168.2.1) in 43 ms
pl. 172800 IN NS c-dns.pl.
pl. 172800 IN NS f-dns.pl.
pl. 172800 IN NS e-dns.pl.
pl. 172800 IN NS i-dns.pl.
pl. 172800 IN NS d-dns.pl.
pl. 172800 IN NS h-dns.pl.
pl. 172800 IN NS a-dns.pl.
pl. 172800 IN NS g-dns.pl.
;; Received 397 bytes from 192.33.4.12#53(c.root-servers.net) in 61 ms
imgw.pl. 86400 IN NS krgw1.imgw.pl.
imgw.pl. 86400 IN NS wagw1.imgw.pl.
;; Received 97 bytes from 194.0.1.2#53(h-dns.pl) in 61 ms
imgw.pl. 3600 IN A 195.187.86.14
imgw.pl. 3600 IN A 195.187.86.13
;; Received 71 bytes from 212.160.142.68#53(krgw1.imgw.pl) in 70 ms
"""
Does anybody know why unbound has problems with this domain?
Thanks for any answers...
Best regards,
Nick
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