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Red Hat Bugzilla – Attachment 311485 Details for
Bug 454206
Intermittant DNS failures with curl, firefox, yum, ...; works fine with nslookup
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wireshark capture showing "successful" 'getent ahosts mirrors.fedoraproject.org'
getent-wireshark-good.txt (text/plain), 19.13 KB, created by
Tom London
on 2008-07-10 14:54:13 UTC
(
hide
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Description:
wireshark capture showing "successful" 'getent ahosts mirrors.fedoraproject.org'
Filename:
MIME Type:
Creator:
Tom London
Created:
2008-07-10 14:54:13 UTC
Size:
19.13 KB
patch
obsolete
>No. Time Source Destination Protocol Info > 1 0.000000 192.168.1.100 224.0.0.251 MDNS Standard query response A, cache flush 192.168.1.100 PTR, cache flush Device-001EC2CDDF98.local > >Frame 1 (135 bytes on wire, 135 bytes captured) > Arrival Time: Jul 10, 2008 07:14:35.272011000 > [Time delta from previous captured frame: 0.000000000 seconds] > [Time delta from previous displayed frame: 0.000000000 seconds] > [Time since reference or first frame: 0.000000000 seconds] > Frame Number: 1 > Frame Length: 135 bytes > Capture Length: 135 bytes > [Frame is marked: False] > [Protocols in frame: eth:ip:udp:dns] > [Coloring Rule Name: TTL low or unexpected] > [Coloring Rule String: ( ! ip.dst == 224.0.0.0/4 && ip.ttl < 5) || (ip.dst == 224.0.0.0/24 && ip.ttl != 1)] >Ethernet II, Src: Apple_cd:df:98 (00:1e:c2:cd:df:98), Dst: IPv4mcast_00:00:fb (01:00:5e:00:00:fb) > Destination: IPv4mcast_00:00:fb (01:00:5e:00:00:fb) > Address: IPv4mcast_00:00:fb (01:00:5e:00:00:fb) > .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Source: Apple_cd:df:98 (00:1e:c2:cd:df:98) > Address: Apple_cd:df:98 (00:1e:c2:cd:df:98) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Type: IP (0x0800) >Internet Protocol, Src: 192.168.1.100 (192.168.1.100), Dst: 224.0.0.251 (224.0.0.251) > Version: 4 > Header length: 20 bytes > Differentiated Services Field: 0x18 (DSCP 0x06: Unknown DSCP; ECN: 0x00) > 0001 10.. = Differentiated Services Codepoint: Unknown (0x06) > .... ..0. = ECN-Capable Transport (ECT): 0 > .... ...0 = ECN-CE: 0 > Total Length: 121 > Identification: 0x0488 (1160) > Flags: 0x00 > 0... = Reserved bit: Not set > .0.. = Don't fragment: Not set > ..0. = More fragments: Not set > Fragment offset: 0 > Time to live: 255 > Protocol: UDP (0x11) > Header checksum: 0x13cc [correct] > [Good: True] > [Bad : False] > Source: 192.168.1.100 (192.168.1.100) > Destination: 224.0.0.251 (224.0.0.251) >User Datagram Protocol, Src Port: mdns (5353), Dst Port: mdns (5353) > Source port: mdns (5353) > Destination port: mdns (5353) > Length: 101 > Checksum: 0x6e15 [correct] > [Good Checksum: True] > [Bad Checksum: False] >Domain Name System (response) > Transaction ID: 0x0000 > Flags: 0x8400 (Standard query response, No error) > 1... .... .... .... = Response: Message is a response > .000 0... .... .... = Opcode: Standard query (0) > .... .1.. .... .... = Authoritative: Server is an authority for domain > .... ..0. .... .... = Truncated: Message is not truncated > .... ...0 .... .... = Recursion desired: Don't do query recursively > .... .... 0... .... = Recursion available: Server can't do recursive queries > .... .... .0.. .... = Z: reserved (0) > .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server > .... .... .... 0000 = Reply code: No error (0) > Questions: 0 > Answer RRs: 2 > Authority RRs: 0 > Additional RRs: 0 > Answers > Device-001EC2CDDF98.local: type A, class IN, cache flush, addr 192.168.1.100 > Name: Device-001EC2CDDF98.local > Type: A (Host address) > .000 0000 0000 0001 = Class: IN (0x0001) > 1... .... .... .... = Cache flush: True > Time to live: 2 minutes > Data length: 4 > Addr: 192.168.1.100 > 100.1.168.192.in-addr.arpa: type PTR, class IN, cache flush, Device-001EC2CDDF98.local > Name: 100.1.168.192.in-addr.arpa > Type: PTR (Domain name pointer) > .000 0000 0000 0001 = Class: IN (0x0001) > 1... .... .... .... = Cache flush: True > Time to live: 2 minutes > Data length: 2 > Domain name: Device-001EC2CDDF98.local > >No. Time Source Destination Protocol Info > 2 0.899981 192.168.1.101 68.87.78.130 DNS Standard query A mirrors.fedoraproject.org > >Frame 2 (85 bytes on wire, 85 bytes captured) > Arrival Time: Jul 10, 2008 07:14:36.171992000 > [Time delta from previous captured frame: 0.899981000 seconds] > [Time delta from previous displayed frame: 0.899981000 seconds] > [Time since reference or first frame: 0.899981000 seconds] > Frame Number: 2 > Frame Length: 85 bytes > Capture Length: 85 bytes > [Frame is marked: False] > [Protocols in frame: eth:ip:udp:dns] > [Coloring Rule Name: Checksum Errors] > [Coloring Rule String: cdp.checksum_bad==1 || edp.checksum_bad==1 || ip.checksum_bad==1 || tcp.checksum_bad==1 || udp.checksum_bad==1] >Ethernet II, Src: Wistron_26:85:6f (00:16:d3:26:85:6f), Dst: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Destination: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Address: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Source: Wistron_26:85:6f (00:16:d3:26:85:6f) > Address: Wistron_26:85:6f (00:16:d3:26:85:6f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Type: IP (0x0800) >Internet Protocol, Src: 192.168.1.101 (192.168.1.101), Dst: 68.87.78.130 (68.87.78.130) > Version: 4 > Header length: 20 bytes > Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) > 0000 00.. = Differentiated Services Codepoint: Default (0x00) > .... ..0. = ECN-Capable Transport (ECT): 0 > .... ...0 = ECN-CE: 0 > Total Length: 71 > Identification: 0xb916 (47382) > Flags: 0x04 (Don't Fragment) > 0... = Reserved bit: Not set > .1.. = Don't fragment: Set > ..0. = More fragments: Not set > Fragment offset: 0 > Time to live: 64 > Protocol: UDP (0x11) > Header checksum: 0x2ca9 [correct] > [Good: True] > [Bad : False] > Source: 192.168.1.101 (192.168.1.101) > Destination: 68.87.78.130 (68.87.78.130) >User Datagram Protocol, Src Port: 48076 (48076), Dst Port: domain (53) > Source port: 48076 (48076) > Destination port: domain (53) > Length: 51 > Checksum: 0x552b [incorrect, should be 0x2950 (maybe caused by "UDP checksum offload"?)] > [Good Checksum: False] > [Bad Checksum: True] >Domain Name System (query) > [Response In: 5] > Transaction ID: 0x72bf > Flags: 0x0100 (Standard query) > 0... .... .... .... = Response: Message is a query > .000 0... .... .... = Opcode: Standard query (0) > .... ..0. .... .... = Truncated: Message is not truncated > .... ...1 .... .... = Recursion desired: Do query recursively > .... .... .0.. .... = Z: reserved (0) > .... .... ...0 .... = Non-authenticated data OK: Non-authenticated data is unacceptable > Questions: 1 > Answer RRs: 0 > Authority RRs: 0 > Additional RRs: 0 > Queries > mirrors.fedoraproject.org: type A, class IN > Name: mirrors.fedoraproject.org > Type: A (Host address) > Class: IN (0x0001) > >No. Time Source Destination Protocol Info > 3 0.900758 192.168.1.101 68.87.78.130 DNS Standard query AAAA mirrors.fedoraproject.org > >Frame 3 (85 bytes on wire, 85 bytes captured) > Arrival Time: Jul 10, 2008 07:14:36.172769000 > [Time delta from previous captured frame: 0.000777000 seconds] > [Time delta from previous displayed frame: 0.000777000 seconds] > [Time since reference or first frame: 0.900758000 seconds] > Frame Number: 3 > Frame Length: 85 bytes > Capture Length: 85 bytes > [Frame is marked: False] > [Protocols in frame: eth:ip:udp:dns] > [Coloring Rule Name: Checksum Errors] > [Coloring Rule String: cdp.checksum_bad==1 || edp.checksum_bad==1 || ip.checksum_bad==1 || tcp.checksum_bad==1 || udp.checksum_bad==1] >Ethernet II, Src: Wistron_26:85:6f (00:16:d3:26:85:6f), Dst: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Destination: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Address: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Source: Wistron_26:85:6f (00:16:d3:26:85:6f) > Address: Wistron_26:85:6f (00:16:d3:26:85:6f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Type: IP (0x0800) >Internet Protocol, Src: 192.168.1.101 (192.168.1.101), Dst: 68.87.78.130 (68.87.78.130) > Version: 4 > Header length: 20 bytes > Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) > 0000 00.. = Differentiated Services Codepoint: Default (0x00) > .... ..0. = ECN-Capable Transport (ECT): 0 > .... ...0 = ECN-CE: 0 > Total Length: 71 > Identification: 0xb917 (47383) > Flags: 0x04 (Don't Fragment) > 0... = Reserved bit: Not set > .1.. = Don't fragment: Set > ..0. = More fragments: Not set > Fragment offset: 0 > Time to live: 64 > Protocol: UDP (0x11) > Header checksum: 0x2ca8 [correct] > [Good: True] > [Bad : False] > Source: 192.168.1.101 (192.168.1.101) > Destination: 68.87.78.130 (68.87.78.130) >User Datagram Protocol, Src Port: 48076 (48076), Dst Port: domain (53) > Source port: 48076 (48076) > Destination port: domain (53) > Length: 51 > Checksum: 0x552b [incorrect, should be 0x075b (maybe caused by "UDP checksum offload"?)] > [Good Checksum: False] > [Bad Checksum: True] >Domain Name System (query) > [Response In: 4] > Transaction ID: 0x79b4 > Flags: 0x0100 (Standard query) > 0... .... .... .... = Response: Message is a query > .000 0... .... .... = Opcode: Standard query (0) > .... ..0. .... .... = Truncated: Message is not truncated > .... ...1 .... .... = Recursion desired: Do query recursively > .... .... .0.. .... = Z: reserved (0) > .... .... ...0 .... = Non-authenticated data OK: Non-authenticated data is unacceptable > Questions: 1 > Answer RRs: 0 > Authority RRs: 0 > Additional RRs: 0 > Queries > mirrors.fedoraproject.org: type AAAA, class IN > Name: mirrors.fedoraproject.org > Type: AAAA (IPv6 address) > Class: IN (0x0001) > >No. Time Source Destination Protocol Info > 4 0.951433 68.87.78.130 192.168.1.101 DNS Standard query response CNAME fedoraproject.org > >Frame 4 (146 bytes on wire, 146 bytes captured) > Arrival Time: Jul 10, 2008 07:14:36.223444000 > [Time delta from previous captured frame: 0.050675000 seconds] > [Time delta from previous displayed frame: 0.050675000 seconds] > [Time since reference or first frame: 0.951433000 seconds] > Frame Number: 4 > Frame Length: 146 bytes > Capture Length: 146 bytes > [Frame is marked: False] > [Protocols in frame: eth:ip:udp:dns] > [Coloring Rule Name: UDP] > [Coloring Rule String: udp] >Ethernet II, Src: Cisco-Li_46:42:4f (00:12:17:46:42:4f), Dst: Wistron_26:85:6f (00:16:d3:26:85:6f) > Destination: Wistron_26:85:6f (00:16:d3:26:85:6f) > Address: Wistron_26:85:6f (00:16:d3:26:85:6f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Source: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Address: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Type: IP (0x0800) >Internet Protocol, Src: 68.87.78.130 (68.87.78.130), Dst: 192.168.1.101 (192.168.1.101) > Version: 4 > Header length: 20 bytes > Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) > 0000 00.. = Differentiated Services Codepoint: Default (0x00) > .... ..0. = ECN-Capable Transport (ECT): 0 > .... ...0 = ECN-CE: 0 > Total Length: 132 > Identification: 0x0000 (0) > Flags: 0x04 (Don't Fragment) > 0... = Reserved bit: Not set > .1.. = Don't fragment: Set > ..0. = More fragments: Not set > Fragment offset: 0 > Time to live: 51 > Protocol: UDP (0x11) > Header checksum: 0xf282 [correct] > [Good: True] > [Bad : False] > Source: 68.87.78.130 (68.87.78.130) > Destination: 192.168.1.101 (192.168.1.101) >User Datagram Protocol, Src Port: domain (53), Dst Port: 48076 (48076) > Source port: domain (53) > Destination port: 48076 (48076) > Length: 112 > Checksum: 0x3729 [correct] > [Good Checksum: True] > [Bad Checksum: False] >Domain Name System (response) > [Request In: 3] > [Time: 0.050675000 seconds] > Transaction ID: 0x79b4 > Flags: 0x8180 (Standard query response, No error) > 1... .... .... .... = Response: Message is a response > .000 0... .... .... = Opcode: Standard query (0) > .... .0.. .... .... = Authoritative: Server is not an authority for domain > .... ..0. .... .... = Truncated: Message is not truncated > .... ...1 .... .... = Recursion desired: Do query recursively > .... .... 1... .... = Recursion available: Server can do recursive queries > .... .... .0.. .... = Z: reserved (0) > .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server > .... .... .... 0000 = Reply code: No error (0) > Questions: 1 > Answer RRs: 1 > Authority RRs: 1 > Additional RRs: 0 > Queries > mirrors.fedoraproject.org: type AAAA, class IN > Name: mirrors.fedoraproject.org > Type: AAAA (IPv6 address) > Class: IN (0x0001) > Answers > mirrors.fedoraproject.org: type CNAME, class IN, cname fedoraproject.org > Name: mirrors.fedoraproject.org > Type: CNAME (Canonical name for an alias) > Class: IN (0x0001) > Time to live: 17 minutes, 40 seconds > Data length: 2 > Primary name: fedoraproject.org > Authoritative nameservers > fedoraproject.org: type SOA, class IN, mname fedoraproject.org > Name: fedoraproject.org > Type: SOA (Start of zone of authority) > Class: IN (0x0001) > Time to live: 4 minutes, 1 second > Data length: 35 > Primary name server: fedoraproject.org > Responsible authority's mailbox: hostmaster.fedoraproject.org > Serial number: 2008062701 > Refresh interval: 8 hours > Retry interval: 2 hours > Expiration limit: 28 days > Minimum TTL: 1 day > >No. Time Source Destination Protocol Info > 5 1.007441 68.87.78.130 192.168.1.101 DNS Standard query response CNAME fedoraproject.org A 66.35.62.162 A 209.132.176.122 > >Frame 5 (131 bytes on wire, 131 bytes captured) > Arrival Time: Jul 10, 2008 07:14:36.279452000 > [Time delta from previous captured frame: 0.056008000 seconds] > [Time delta from previous displayed frame: 0.056008000 seconds] > [Time since reference or first frame: 1.007441000 seconds] > Frame Number: 5 > Frame Length: 131 bytes > Capture Length: 131 bytes > [Frame is marked: False] > [Protocols in frame: eth:ip:udp:dns] > [Coloring Rule Name: UDP] > [Coloring Rule String: udp] >Ethernet II, Src: Cisco-Li_46:42:4f (00:12:17:46:42:4f), Dst: Wistron_26:85:6f (00:16:d3:26:85:6f) > Destination: Wistron_26:85:6f (00:16:d3:26:85:6f) > Address: Wistron_26:85:6f (00:16:d3:26:85:6f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Source: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > Address: Cisco-Li_46:42:4f (00:12:17:46:42:4f) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > Type: IP (0x0800) >Internet Protocol, Src: 68.87.78.130 (68.87.78.130), Dst: 192.168.1.101 (192.168.1.101) > Version: 4 > Header length: 20 bytes > Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) > 0000 00.. = Differentiated Services Codepoint: Default (0x00) > .... ..0. = ECN-Capable Transport (ECT): 0 > .... ...0 = ECN-CE: 0 > Total Length: 117 > Identification: 0x0000 (0) > Flags: 0x04 (Don't Fragment) > 0... = Reserved bit: Not set > .1.. = Don't fragment: Set > ..0. = More fragments: Not set > Fragment offset: 0 > Time to live: 51 > Protocol: UDP (0x11) > Header checksum: 0xf291 [correct] > [Good: True] > [Bad : False] > Source: 68.87.78.130 (68.87.78.130) > Destination: 192.168.1.101 (192.168.1.101) >User Datagram Protocol, Src Port: domain (53), Dst Port: 48076 (48076) > Source port: domain (53) > Destination port: 48076 (48076) > Length: 97 > Checksum: 0xe868 [correct] > [Good Checksum: True] > [Bad Checksum: False] >Domain Name System (response) > [Request In: 2] > [Time: 0.107460000 seconds] > Transaction ID: 0x72bf > Flags: 0x8180 (Standard query response, No error) > 1... .... .... .... = Response: Message is a response > .000 0... .... .... = Opcode: Standard query (0) > .... .0.. .... .... = Authoritative: Server is not an authority for domain > .... ..0. .... .... = Truncated: Message is not truncated > .... ...1 .... .... = Recursion desired: Do query recursively > .... .... 1... .... = Recursion available: Server can do recursive queries > .... .... .0.. .... = Z: reserved (0) > .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server > .... .... .... 0000 = Reply code: No error (0) > Questions: 1 > Answer RRs: 3 > Authority RRs: 0 > Additional RRs: 0 > Queries > mirrors.fedoraproject.org: type A, class IN > Name: mirrors.fedoraproject.org > Type: A (Host address) > Class: IN (0x0001) > Answers > mirrors.fedoraproject.org: type CNAME, class IN, cname fedoraproject.org > Name: mirrors.fedoraproject.org > Type: CNAME (Canonical name for an alias) > Class: IN (0x0001) > Time to live: 17 minutes, 40 seconds > Data length: 2 > Primary name: fedoraproject.org > fedoraproject.org: type A, class IN, addr 66.35.62.162 > Name: fedoraproject.org > Type: A (Host address) > Class: IN (0x0001) > Time to live: 1 minute > Data length: 4 > Addr: 66.35.62.162 > fedoraproject.org: type A, class IN, addr 209.132.176.122 > Name: fedoraproject.org > Type: A (Host address) > Class: IN (0x0001) > Time to live: 1 minute > Data length: 4 > Addr: 209.132.176.122
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