[Bug 259864] PF periodically drops packets that belong to established session, thus stalling the session

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 259864] PF periodically drops packets that belong to established session, thus stalling the session"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 15 Nov 2021 19:25:43 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259864

--- Comment #4 from emz@norma.perm.ru ---
Network layout:

WAN <---> (vlan11/188.234.141.201/30)PF host(vlan2/91.206.242.1)
<---91.206.242.0/24---> (vlan2/91.206.242.9) Web Server

ifconfigs:

[root@gw0:pf/pr]# ifconfig vlan11
vlan11: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:25:90:06:b7:9f
        inet 188.234.141.201/30 broadcast 188.234.141.203
        groups: vlan
        vlan: 11 vlanpcp: 0 parent interface: igb1
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
[root@gw0:pf/pr]# ifconfig vlan2
vlan2: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu
1500
        options=600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:25:90:06:b7:9f
        inet 91.206.242.1/28 broadcast 91.206.242.15
        inet 91.206.242.5/28 broadcast 91.206.242.15
        inet 91.206.242.12/28 broadcast 91.206.242.15 vhid 3
        inet 91.206.242.8/28 broadcast 91.206.242.15
        groups: vlan
        carp: MASTER vhid 3 advbase 1 advskew 100
        vlan: 2 vlanpcp: 0 parent interface: igb1
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Parent interface:

igb1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu
1500
       
options=e527bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:25:90:06:b7:9f
        inet 192.168.0.248/24 broadcast 192.168.0.255
        inet 192.168.0.246/24 broadcast 192.168.0.255 vhid 1
        inet 192.168.0.254/32 broadcast 192.168.0.254
        carp: MASTER vhid 1 advbase 1 advskew 100
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

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