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2019 Apr 04
0
[Bug 1332] New: Time-matching extension (--match time) broken by timestamping changes in kernel 4.20 and later
...utput.c") with the following patch: - /* Our usage of tstamp should remain private */ - skb->tstamp = 0; + /* Leave earliest departure time in skb->tstamp (skb->skb_mstamp_ns) */ Now that the timestamp no longer is cleared, this will end up causing incorrect matching in function 'time_mt()' (in "net/netfilter/xt_time.c"). The "problem" is present in the following two lines of code: if (skb->tstamp == 0) __net_timestamp((struct sk_buff *)skb); The above code will check if the packet already has a timestamp or not. If the timestamp is missing, then the...