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-rw-r--r--sys/netinet/tcp_input.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
index 110a870..31f9b05 100644
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -1463,7 +1463,12 @@ trimthenstep6:
tcpstat.tcps_rcvduppack++;
tcpstat.tcps_rcvdupbyte += tlen;
tcpstat.tcps_pawsdrop++;
- goto dropafterack;
+ if (tlen) {
+ goto dropafterack;
+ } else {
+ printf("PAWS ack-on-ack loop avoided\n");
+ goto drop;
+ }
}
}
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