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    NTP Issue

    Scheduled Pinned Locked Moved
    General pfSense Questions
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    • A
      admacdo @stephenw10
      last edited by

      @stephenw10
      Nope.
      Only the external NTP servers are seen and used.

      1 Reply Last reply Reply Quote 0
      • A
        admacdo @stephenw10
        last edited by

        @stephenw10
        Might have helped to post this:

        09:22:49.170320 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 28353, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x8f85!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.006912, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801704.158000500 (2024-07-24T09:21:44Z)
        Receive Timestamp: 3930801704.161610624 (2024-07-24T09:21:44Z)
        Transmit Timestamp: 3930801769.170296701 (2024-07-24T09:22:49Z)
        Originator - Receive Timestamp: +0.003610124
        Originator - Transmit Timestamp: +65.012296201
        09:22:49.170381 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10031, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801769.000000000 (2024-07-24T09:22:49Z)
        Originator Timestamp: 3930801769.170296701 (2024-07-24T09:22:49Z)
        Receive Timestamp: 3930801769.167000500 (2024-07-24T09:22:49Z)
        Transmit Timestamp: 3930801769.167000500 (2024-07-24T09:22:49Z)
        Originator - Receive Timestamp: -0.003296201
        Originator - Transmit Timestamp: -0.003296201
        09:22:57.187023 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 45902, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x5082!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.007034, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801769.167000500 (2024-07-24T09:22:49Z)
        Receive Timestamp: 3930801769.170386584 (2024-07-24T09:22:49Z)
        Transmit Timestamp: 3930801777.187008800 (2024-07-24T09:22:57Z)
        Originator - Receive Timestamp: +0.003386084
        Originator - Transmit Timestamp: +8.020008299
        09:22:57.187083 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10032, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801777.000000000 (2024-07-24T09:22:57Z)
        Originator Timestamp: 3930801777.187008800 (2024-07-24T09:22:57Z)
        Receive Timestamp: 3930801777.183000500 (2024-07-24T09:22:57Z)
        Transmit Timestamp: 3930801777.183000500 (2024-07-24T09:22:57Z)
        Originator - Receive Timestamp: -0.004008300
        Originator - Transmit Timestamp: -0.004008300
        09:23:05.179910 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 43251, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x5129!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.007156, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801777.183000500 (2024-07-24T09:22:57Z)
        Receive Timestamp: 3930801777.187088760 (2024-07-24T09:22:57Z)
        Transmit Timestamp: 3930801785.179879918 (2024-07-24T09:23:05Z)
        Originator - Receive Timestamp: +0.004088260
        Originator - Transmit Timestamp: +7.996879418
        09:23:05.179988 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10033, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801785.000000000 (2024-07-24T09:23:05Z)
        Originator Timestamp: 3930801785.179879918 (2024-07-24T09:23:05Z)
        Receive Timestamp: 3930801785.176000500 (2024-07-24T09:23:05Z)
        Transmit Timestamp: 3930801785.176000500 (2024-07-24T09:23:05Z)
        Originator - Receive Timestamp: -0.003879418
        Originator - Transmit Timestamp: -0.003879418
        09:24:11.223769 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 17146, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x2cfc!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.008148, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801785.176000500 (2024-07-24T09:23:05Z)
        Receive Timestamp: 3930801785.180030896 (2024-07-24T09:23:05Z)
        Transmit Timestamp: 3930801851.223755123 (2024-07-24T09:24:11Z)
        Originator - Receive Timestamp: +0.004030396
        Originator - Transmit Timestamp: +66.047754622
        09:24:11.223843 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10034, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801851.000000000 (2024-07-24T09:24:11Z)
        Originator Timestamp: 3930801851.223755123 (2024-07-24T09:24:11Z)
        Receive Timestamp: 3930801851.220000500 (2024-07-24T09:24:11Z)
        Transmit Timestamp: 3930801851.220000500 (2024-07-24T09:24:11Z)
        Originator - Receive Timestamp: -0.003754622
        Originator - Transmit Timestamp: -0.003754622
        09:24:19.195033 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 50821, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0xae46!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.008270, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801851.220000500 (2024-07-24T09:24:11Z)
        Receive Timestamp: 3930801851.223882897 (2024-07-24T09:24:11Z)
        Transmit Timestamp: 3930801859.195007028 (2024-07-24T09:24:19Z)
        Originator - Receive Timestamp: +0.003882397
        Originator - Transmit Timestamp: +7.975006527
        09:24:19.195121 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10035, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801859.000000000 (2024-07-24T09:24:19Z)
        Originator Timestamp: 3930801859.195007028 (2024-07-24T09:24:19Z)
        Receive Timestamp: 3930801859.192000500 (2024-07-24T09:24:19Z)
        Transmit Timestamp: 3930801859.192000500 (2024-07-24T09:24:19Z)
        Originator - Receive Timestamp: -0.003006528
        Originator - Transmit Timestamp: -0.003006528
        09:24:27.176376 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 48593, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x37e1!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.008392, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801859.192000500 (2024-07-24T09:24:19Z)
        Receive Timestamp: 3930801859.195166604 (2024-07-24T09:24:19Z)
        Transmit Timestamp: 3930801867.176368362 (2024-07-24T09:24:27Z)
        Originator - Receive Timestamp: +0.003166103
        Originator - Transmit Timestamp: +7.984367861
        09:24:27.176494 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10036, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801867.000000000 (2024-07-24T09:24:27Z)
        Originator Timestamp: 3930801867.176368362 (2024-07-24T09:24:27Z)
        Receive Timestamp: 3930801867.173000500 (2024-07-24T09:24:27Z)
        Transmit Timestamp: 3930801867.173000500 (2024-07-24T09:24:27Z)
        Originator - Receive Timestamp: -0.003367861
        Originator - Transmit Timestamp: -0.003367861
        09:25:34.172849 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype IPv4 (0x0800), length 90: (tos 0xb8, ttl 64, id 10788, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.1.123 > 172.16.1.2.123: [bad udp cksum 0x5a6d -> 0x34ff!] NTPv4, Client, length 48
        Leap indicator: (0), Stratum 2 (secondary reference), poll 6 (64s), precision -23
        Root Delay: 0.015640, Root dispersion: 0.009384, Reference-ID: 0x11fd4225
        Reference Timestamp: 3930801750.204506135 (2024-07-24T09:22:30Z)
        Originator Timestamp: 3930801867.173000500 (2024-07-24T09:24:27Z)
        Receive Timestamp: 3930801867.176498219 (2024-07-24T09:24:27Z)
        Transmit Timestamp: 3930801934.172838781 (2024-07-24T09:25:34Z)
        Originator - Receive Timestamp: +0.003497719
        Originator - Transmit Timestamp: +66.999838281
        09:25:34.172908 a6:4c:5e:80:2e:fb > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 172.16.1.1 tell 172.16.1.2, length 46
        09:25:34.172917 60:be:b4:07:c6:17 > a6:4c:5e:80:2e:fb, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Reply 172.16.1.1 is-at 60:be:b4:07:c6:17, length 28
        09:25:34.172956 a6:4c:5e:80:2e:fb > 60:be:b4:07:c6:17, ethertype IPv4 (0x0800), length 90: (tos 0x0, ttl 255, id 10037, offset 0, flags [none], proto UDP (17), length 76)
        172.16.1.2.123 > 172.16.1.1.123: [udp sum ok] NTPv4, Server, length 48
        Leap indicator: (0), Stratum 1 (primary reference), poll 0 (1s), precision -18
        Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: PPS^@
        Reference Timestamp: 3930801934.000000000 (2024-07-24T09:25:34Z)
        Originator Timestamp: 3930801934.172838781 (2024-07-24T09:25:34Z)
        Receive Timestamp: 3930801934.169000500 (2024-07-24T09:25:34Z)
        Transmit Timestamp: 3930801934.169000500 (2024-07-24T09:25:34Z)
        Originator - Receive Timestamp: -0.003838281
        Originator - Transmit Timestamp: -0.003838281

        johnpozJ 1 Reply Last reply Reply Quote 0
        • johnpozJ
          johnpoz LAYER 8 Global Moderator @admacdo
          last edited by

          @admacdo said in NTP Issue:

          [bad udp cksum 0x5a6d

          odd that all the traffic you send to 1.2 shows bad checksum??

          But traffic from 1.2 to 1.1 shows ok?

          Do you have your checksum offload on?

          An intelligent man is sometimes forced to be drunk to spend time with his fools
          If you get confused: Listen to the Music Play
          Please don't Chat/PM me for help, unless mod related
          SG-4860 24.03 | Lab VMs 2.7.2, 24.03

          A 1 Reply Last reply Reply Quote 0
          • A
            admacdo @johnpoz
            last edited by

            @johnpoz
            No checksum offload tick.

            stephenw10S 1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator @admacdo
              last edited by

              @admacdo said in NTP Issue:

              No checksum offload tick.

              'No tick' could imply it's not disabled and therefore is offloaded.

              A 1 Reply Last reply Reply Quote 0
              • A
                admacdo @stephenw10
                last edited by

                @stephenw10
                Yeah, bad explanation on my part. It's not disabled.
                I even cycled it on and off a few times with a reboot to see if it made any difference.

                No change.

                I'm a little disappointed.

                1 Reply Last reply Reply Quote 0
                • stephenw10S
                  stephenw10 Netgate Administrator
                  last edited by

                  If it's actually disabled you can see that directly using ifconfig at the CLI, for example:

                  [24.08-DEVELOPMENT][admin@4200.stevew.lan]/root: ifconfig -m igc1
igc1: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
	options=48020b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_MAGIC,HWSTATS,MEXTPG>
	capabilities=4f43fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>

                  Where tx and rx checksums are shown in capabilities but not options. Though you see vlan checkums are still enabled.

                  A 1 Reply Last reply Reply Quote 0
                  • A
                    admacdo @stephenw10
                    last edited by

                    @stephenw10

                    Well, it looks like it's not disabled, as all previous indications have said that it isn't.

                    igc2: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
                    description: LAN
                    options=4e020bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_MAGIC,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
                    capabilities=4f43fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
                    ether 60:be:b4:07:c6:16
                    inet 192.168.25.254 netmask 0xffffff00 broadcast 192.168.25.255
                    inet6 fe80::62be:b4ff:fe07:c616%igc2 prefixlen 64 scopeid 0x3
                    media: Ethernet autoselect (1000baseT <full-duplex>)
                    status: active
                    supported media:
                    media autoselect
                    media 2500Base-T
                    media 1000baseT
                    media 1000baseT mediaopt full-duplex
                    media 100baseTX mediaopt full-duplex
                    media 100baseTX
                    media 10baseT/UTP mediaopt full-duplex
                    media 10baseT/UTP
                    nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

                    1 Reply Last reply Reply Quote 0
                    • stephenw10S
                      stephenw10 Netgate Administrator
                      last edited by

                      Ok then the checksum failure in a pcap is expected. That isn't really a problem normally though.

                      1 Reply Last reply Reply Quote 0
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