NGFW-15626: Add Bookworm kernel 6.1.159 build support#12
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singhrohit23 wants to merge 9 commits intomasterfrom
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NGFW-15626: Add Bookworm kernel 6.1.159 build support#12singhrohit23 wants to merge 9 commits intomasterfrom
singhrohit23 wants to merge 9 commits intomasterfrom
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singhrohit23
requested review from
AristaKB,
DhirajM09,
cblaise-untangle and
mayur-dhande
mayur-dhande
approved these changes
Mar 5, 2026
…o build on nodes with more free disk
In kernel 6.1, nfqnl_reinject() only calls ct_hook->update() for NF_ACCEPT/REPEAT/STOP verdicts. For NF_DROP, the unconfirmed conntrack entry is destroyed when the skb is freed. This breaks UDP proxy architectures where userspace drops the original packet and re-sends via its own socket, relying on the conntrack entry for reply NAT de-translation. Add mark-gated opt-in patch (0007): when module parameter nfqueue_confirm_drop_mark is set, packets with matching skb mark get their conntrack entry confirmed before NF_DROP processing. Version bumped to untangle2bookworm. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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ct_hook->update() calls nf_confirm_cthelper() which returns early without confirming when no conntrack helper is attached — the common case for plain UDP. Confirmed via kprobes: - nf_conntrack_update() returns 0 (success) - __nf_conntrack_confirm() is never called from that path Switch to calling __nf_conntrack_confirm() directly with guards: - Only for unconfirmed entries (nf_ct_is_confirmed check) - Only for tracked packets (nf_ct_get check) - Only for marked packets (nfqueue_confirm_drop_mark) Version bumped to untangle3bookworm. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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