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Why does ping to FQDN fails, but dig succeed?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!CNAME to another domain fails on some office networks, why?Setting up a DNS name server for a mass virtual host with Bind9able to dig a hostname but doesn't resolve via ssh or pingMoved DNS and Email Hosting, Now Can't Send/Receive To/From Domains Hosted on Previous HostDNS setup with BINDWhy can host and nslookup resolve a name but dig cannot?How to correctly configure nameserversWhy does dig succeed if I add an SOA query and fail when I do not?Cannot find solution to “One or more of your nameservers did not return any of your NS records.” on intoDNS sitebind dns resolution failure through cname chain
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0
When I try to ping a certain FQDN, I fail:
$ ping test-customer-1.clients.jsonar.com
ping: test-customer-1.clients.jsonar.com: Name or service not known
However, dig et al. succeeds:
$ dig test-customer-1.clients.jsonar.com
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> test-customer-1.clients.jsonar.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57830
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;test-customer-1.clients.jsonar.com. IN A
;; ANSWER SECTION:
test-customer-1.clients.jsonar.com. 3119 IN CNAME _r1.clients.jsonar.com.
_r1.clients.jsonar.com. 3119 IN CNAME _w1.clients.jsonar.com.
_w1.clients.jsonar.com. 3119 IN A 3.209.217.53
;; Query time: 15 msec
;; SERVER: 192.168.1.99#53(192.168.1.99)
;; WHEN: Fri Apr 12 15:44:21 PDT 2019
;; MSG SIZE rcvd: 115
$ nslookup test-customer-1.clients.jsonar.com.
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
test-customer-1.clients.jsonar.com canonical name = _r1.clients.jsonar.com.
_r1.clients.jsonar.com canonical name = _w1.clients.jsonar.com.
Name: _w1.clients.jsonar.com
Address: 3.209.217.53
$ host test-customer-1.clients.jsonar.com
test-customer-1.clients.jsonar.com is an alias for _r1.clients.jsonar.com.
_r1.clients.jsonar.com is an alias for _w1.clients.jsonar.com.
_w1.clients.jsonar.com has address 3.209.217.53
Files:
$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.99
nameserver 8.8.8.8
$ cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s31f6"
UUID="cf566dc0-de91-497d-a045-560fddfbaf3e"
DEVICE="enp0s31f6"
ONBOOT="yes"
DNS1=8.8.8.8
$ cat /etc/nsswitch.conf | grep hosts
#hosts: db files nisplus nis dns
#hosts: files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts: files dns myhostname
Edits:
$ getent hosts test-customer-1.clients.jsonar.com
$ echo $?
2
# According to the man page, exit code 2 means:
# One or more supplied key could not be found in the database
Pinging from Linux machines fail, but succeed from Windows machines.
domain-name-system ping host dig
asked Apr 12 at 23:21
boardriderboardrider
312415
|
show 1 more comment
0
When I try to ping a certain FQDN, I fail:
$ ping test-customer-1.clients.jsonar.com
ping: test-customer-1.clients.jsonar.com: Name or service not known
However, dig et al. succeeds:
$ dig test-customer-1.clients.jsonar.com
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> test-customer-1.clients.jsonar.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57830
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;test-customer-1.clients.jsonar.com. IN A
;; ANSWER SECTION:
test-customer-1.clients.jsonar.com. 3119 IN CNAME _r1.clients.jsonar.com.
_r1.clients.jsonar.com. 3119 IN CNAME _w1.clients.jsonar.com.
_w1.clients.jsonar.com. 3119 IN A 3.209.217.53
;; Query time: 15 msec
;; SERVER: 192.168.1.99#53(192.168.1.99)
;; WHEN: Fri Apr 12 15:44:21 PDT 2019
;; MSG SIZE rcvd: 115
$ nslookup test-customer-1.clients.jsonar.com.
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
test-customer-1.clients.jsonar.com canonical name = _r1.clients.jsonar.com.
_r1.clients.jsonar.com canonical name = _w1.clients.jsonar.com.
Name: _w1.clients.jsonar.com
Address: 3.209.217.53
$ host test-customer-1.clients.jsonar.com
test-customer-1.clients.jsonar.com is an alias for _r1.clients.jsonar.com.
_r1.clients.jsonar.com is an alias for _w1.clients.jsonar.com.
_w1.clients.jsonar.com has address 3.209.217.53
Files:
$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.99
nameserver 8.8.8.8
$ cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s31f6"
UUID="cf566dc0-de91-497d-a045-560fddfbaf3e"
DEVICE="enp0s31f6"
ONBOOT="yes"
DNS1=8.8.8.8
$ cat /etc/nsswitch.conf | grep hosts
#hosts: db files nisplus nis dns
#hosts: files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts: files dns myhostname
Edits:
$ getent hosts test-customer-1.clients.jsonar.com
$ echo $?
2
# According to the man page, exit code 2 means:
# One or more supplied key could not be found in the database
Pinging from Linux machines fail, but succeed from Windows machines.
domain-name-system ping host dig
asked Apr 12 at 23:21
boardriderboardrider
312415
What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
Or more interestingly, what doesgetent hosts test-customer-1.clients.jsonar.com.
– Zoredache
Apr 13 at 5:02
I guess the DNS server at192.168.1.99cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at192.168.1.99` or just use `8.8.8.8'.
– Thomas
Apr 13 at 17:13
1
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the@option otherwise you do not really control which nameserver you query.
– Patrick Mevzek
Apr 14 at 3:29
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45
|
show 1 more comment
0
0
0
1
When I try to ping a certain FQDN, I fail:
$ ping test-customer-1.clients.jsonar.com
ping: test-customer-1.clients.jsonar.com: Name or service not known
However, dig et al. succeeds:
$ dig test-customer-1.clients.jsonar.com
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> test-customer-1.clients.jsonar.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57830
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;test-customer-1.clients.jsonar.com. IN A
;; ANSWER SECTION:
test-customer-1.clients.jsonar.com. 3119 IN CNAME _r1.clients.jsonar.com.
_r1.clients.jsonar.com. 3119 IN CNAME _w1.clients.jsonar.com.
_w1.clients.jsonar.com. 3119 IN A 3.209.217.53
;; Query time: 15 msec
;; SERVER: 192.168.1.99#53(192.168.1.99)
;; WHEN: Fri Apr 12 15:44:21 PDT 2019
;; MSG SIZE rcvd: 115
$ nslookup test-customer-1.clients.jsonar.com.
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
test-customer-1.clients.jsonar.com canonical name = _r1.clients.jsonar.com.
_r1.clients.jsonar.com canonical name = _w1.clients.jsonar.com.
Name: _w1.clients.jsonar.com
Address: 3.209.217.53
$ host test-customer-1.clients.jsonar.com
test-customer-1.clients.jsonar.com is an alias for _r1.clients.jsonar.com.
_r1.clients.jsonar.com is an alias for _w1.clients.jsonar.com.
_w1.clients.jsonar.com has address 3.209.217.53
Files:
$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.99
nameserver 8.8.8.8
$ cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s31f6"
UUID="cf566dc0-de91-497d-a045-560fddfbaf3e"
DEVICE="enp0s31f6"
ONBOOT="yes"
DNS1=8.8.8.8
$ cat /etc/nsswitch.conf | grep hosts
#hosts: db files nisplus nis dns
#hosts: files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts: files dns myhostname
Edits:
$ getent hosts test-customer-1.clients.jsonar.com
$ echo $?
2
# According to the man page, exit code 2 means:
# One or more supplied key could not be found in the database
Pinging from Linux machines fail, but succeed from Windows machines.
domain-name-system ping host dig
asked Apr 12 at 23:21
boardriderboardrider
312415
When I try to ping a certain FQDN, I fail:
$ ping test-customer-1.clients.jsonar.com
ping: test-customer-1.clients.jsonar.com: Name or service not known
However, dig et al. succeeds:
$ dig test-customer-1.clients.jsonar.com
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> test-customer-1.clients.jsonar.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57830
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;test-customer-1.clients.jsonar.com. IN A
;; ANSWER SECTION:
test-customer-1.clients.jsonar.com. 3119 IN CNAME _r1.clients.jsonar.com.
_r1.clients.jsonar.com. 3119 IN CNAME _w1.clients.jsonar.com.
_w1.clients.jsonar.com. 3119 IN A 3.209.217.53
;; Query time: 15 msec
;; SERVER: 192.168.1.99#53(192.168.1.99)
;; WHEN: Fri Apr 12 15:44:21 PDT 2019
;; MSG SIZE rcvd: 115
$ nslookup test-customer-1.clients.jsonar.com.
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
test-customer-1.clients.jsonar.com canonical name = _r1.clients.jsonar.com.
_r1.clients.jsonar.com canonical name = _w1.clients.jsonar.com.
Name: _w1.clients.jsonar.com
Address: 3.209.217.53
$ host test-customer-1.clients.jsonar.com
test-customer-1.clients.jsonar.com is an alias for _r1.clients.jsonar.com.
_r1.clients.jsonar.com is an alias for _w1.clients.jsonar.com.
_w1.clients.jsonar.com has address 3.209.217.53
Files:
$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.99
nameserver 8.8.8.8
$ cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s31f6"
UUID="cf566dc0-de91-497d-a045-560fddfbaf3e"
DEVICE="enp0s31f6"
ONBOOT="yes"
DNS1=8.8.8.8
$ cat /etc/nsswitch.conf | grep hosts
#hosts: db files nisplus nis dns
#hosts: files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts: files dns myhostname
Edits:
$ getent hosts test-customer-1.clients.jsonar.com
$ echo $?
2
# According to the man page, exit code 2 means:
# One or more supplied key could not be found in the database
Pinging from Linux machines fail, but succeed from Windows machines.
domain-name-system ping host dig
domain-name-system ping host dig
asked Apr 12 at 23:21
boardriderboardrider
312415
asked Apr 12 at 23:21
boardriderboardrider
312415
edited 9 hours ago
boardrider
asked Apr 12 at 23:21
boardriderboardrider
312415
asked Apr 12 at 23:21
boardriderboardrider
312415
asked Apr 12 at 23:21
boardriderboardrider
312415
312415
What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
Or more interestingly, what doesgetent hosts test-customer-1.clients.jsonar.com.
– Zoredache
Apr 13 at 5:02
I guess the DNS server at192.168.1.99cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at192.168.1.99` or just use `8.8.8.8'.
– Thomas
Apr 13 at 17:13
1
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the@option otherwise you do not really control which nameserver you query.
– Patrick Mevzek
Apr 14 at 3:29
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45
|
show 1 more comment
What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
Or more interestingly, what doesgetent hosts test-customer-1.clients.jsonar.com.
– Zoredache
Apr 13 at 5:02
I guess the DNS server at192.168.1.99cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at192.168.1.99` or just use `8.8.8.8'.
– Thomas
Apr 13 at 17:13
1
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the@option otherwise you do not really control which nameserver you query.
– Patrick Mevzek
Apr 14 at 3:29
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45
What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
Or more interestingly, what does
getent hosts test-customer-1.clients.jsonar.com.– Zoredache
Apr 13 at 5:02
Or more interestingly, what does
getent hosts test-customer-1.clients.jsonar.com.– Zoredache
Apr 13 at 5:02
I guess the DNS server at
192.168.1.99 cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at 192.168.1.99` or just use `8.8.8.8'.– Thomas
Apr 13 at 17:13
I guess the DNS server at
192.168.1.99 cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at 192.168.1.99` or just use `8.8.8.8'.– Thomas
Apr 13 at 17:13
1
1
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the
@ option otherwise you do not really control which nameserver you query.– Patrick Mevzek
Apr 14 at 3:29
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the
@ option otherwise you do not really control which nameserver you query.– Patrick Mevzek
Apr 14 at 3:29
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45
|
show 1 more comment
1 Answer
1
active
oldest
votes
0
Turns out the problem was caused by quite a bizarre misconfiguration:test-customer-1.clients.jsonar.com record in DNS was NS instead of an A record.
(Seems that Windows doesn't care, which is why pings from a Windows machine were successful, but *nix treats this misconfiguration (correctly) as a possible security breach, and fails the pings).
Once test-customer-1.clients.jsonar.com was registered in DNS with an A record, the issue was resolved.
answered 9 hours ago
boardriderboardrider
312415
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Turns out the problem was caused by quite a bizarre misconfiguration:test-customer-1.clients.jsonar.com record in DNS was NS instead of an A record.
(Seems that Windows doesn't care, which is why pings from a Windows machine were successful, but *nix treats this misconfiguration (correctly) as a possible security breach, and fails the pings).
Once test-customer-1.clients.jsonar.com was registered in DNS with an A record, the issue was resolved.
answered 9 hours ago
boardriderboardrider
312415
add a comment |
0
Turns out the problem was caused by quite a bizarre misconfiguration:test-customer-1.clients.jsonar.com record in DNS was NS instead of an A record.
(Seems that Windows doesn't care, which is why pings from a Windows machine were successful, but *nix treats this misconfiguration (correctly) as a possible security breach, and fails the pings).
Once test-customer-1.clients.jsonar.com was registered in DNS with an A record, the issue was resolved.
answered 9 hours ago
boardriderboardrider
312415
add a comment |
0
0
0
Turns out the problem was caused by quite a bizarre misconfiguration:test-customer-1.clients.jsonar.com record in DNS was NS instead of an A record.
(Seems that Windows doesn't care, which is why pings from a Windows machine were successful, but *nix treats this misconfiguration (correctly) as a possible security breach, and fails the pings).
Once test-customer-1.clients.jsonar.com was registered in DNS with an A record, the issue was resolved.
answered 9 hours ago
boardriderboardrider
312415
Turns out the problem was caused by quite a bizarre misconfiguration:test-customer-1.clients.jsonar.com record in DNS was NS instead of an A record.
(Seems that Windows doesn't care, which is why pings from a Windows machine were successful, but *nix treats this misconfiguration (correctly) as a possible security breach, and fails the pings).
Once test-customer-1.clients.jsonar.com was registered in DNS with an A record, the issue was resolved.
answered 9 hours ago
boardriderboardrider
312415
answered 9 hours ago
boardriderboardrider
312415
answered 9 hours ago
boardriderboardrider
312415
answered 9 hours ago
boardriderboardrider
312415
312415
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What does 'host test-customer-1.clients.jsonar.com' result
– Jacob Evans
Apr 13 at 0:55
Or more interestingly, what does
getent hosts test-customer-1.clients.jsonar.com.– Zoredache
Apr 13 at 5:02
I guess the DNS server at
192.168.1.99cannot resolve the address. You can verify that with 'dig test-customer-1.clients.jsonar.com @192.168.1.99. If that is the case fix the DNS server at192.168.1.99` or just use `8.8.8.8'.– Thomas
Apr 13 at 17:13
1
1) ping is not a tool to use to debug troubleshooting problems, only dig fits for that purpose and 2) never use dig without the
@option otherwise you do not really control which nameserver you query.– Patrick Mevzek
Apr 14 at 3:29
The DNS module on 192.168.1.99 (it's a FortiGate firewall box) can resolve only addresses on the .local LAN. Any external name resolutions are forwarded to FortiNet DNS servers. As you can see in the question, @Thomas, /etc/resolv.conf includes 8.8.8.8.
– boardrider
Apr 15 at 17:45