ping: cannot resolve host.tld: Host name lookup failure, res_send: send: Permission denied

From: Clemens Ende <ende(at)golbs.com>
Date: Fri, 11 Nov 2005 09:38:09 +0100

Hallo,
ich habe ein Problem mit der Namesauflösung bei einem Rechner mit FreeBSD 5.3.

#cat /etc/resolv.conf
nameserver 141.54.1.1
nameserver 141.54.1.3

Die Nameserver sind beide erreichbar.
bash-2.05b# ping 141.54.1.1
PING 141.54.1.1 (141.54.1.1): 56 data bytes
64 bytes from 141.54.1.1: icmp_seq=0 ttl=30 time=6.816 ms
64 bytes from 141.54.1.1: icmp_seq=1 ttl=30 time=6.909 ms

mit Eintrag von "options debug" in /etc/resolv.conf erhalte ich die folgende
Fehlermeldung
bash-2.05b# ping freebsd.org
;; res_setoptions(" debug
", "conf")..
;; debug
;; res_querydomain(freebsd.org, <Nil>, 1, 1)
;; res_query(freebsd.org, 1, 1)
;; res_mkquery(0, freebsd.org, 1, 1)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43286
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; freebsd.org, type = A, class = IN
;; Querying server (# 1) address = 141.54.1.3
res_send: send: Permission denied
;; Querying server (# 2) address = 141.54.1.1
res_send: sendto ([141.54.1.1].53): Permission denied
;; res_query: send error
;; res_querydomain(freebsd.org, , 1, 1)
;; res_query(freebsd.org., 1, 1)
;; res_mkquery(0, freebsd.org., 1, 1)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43287
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; freebsd.org, type = A, class = IN
;; Querying server (# 1) address = 141.54.1.3
res_send: send: Permission denied
;; Querying server (# 2) address = 141.54.1.1
res_send: sendto ([141.54.1.1].53): Permission denied
;; res_query: send error
res_search failed (-1)
ping: cannot resolve freebsd.org: Host name lookup failure

Es sieht aus wie eine Blockierung durch eine Firewall.
Die Firewalls habe ich aber für den Test in /etc/rc.conf ausgeschaltet.

bash-2.05b# cat /etc/rc.conf
hostname="localhost"
ifconfig_rl0="inet 192.168.0.161 netmask 255.255.255.0 broadcast
192.168.0.254"
sshd_enable="YES"
usbd_enable="YES"
keymap="german.cp850"

tcp_extensions="YES"
firewall_enable="NO"
ipfilter_enable="NO"
pf_enable="NO"

Wer kann mir sagen wo das Problem liegen könnte?

Clemens

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Received on Fri 11 Nov 2005 - 09:45:25 CET

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