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-rw-r--r--sys/netgraph/ng_pptpgre.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/netgraph/ng_pptpgre.c b/sys/netgraph/ng_pptpgre.c
index a165a3aac045..c9a83accd0a4 100644
--- a/sys/netgraph/ng_pptpgre.c
+++ b/sys/netgraph/ng_pptpgre.c
@@ -635,7 +635,7 @@ bad:
struct ng_pptpgre_ackp *const a = &priv->ackp;
const u_int32_t ack = ntohl(gre->data[gre->hasSeq]);
const int index = ack - priv->recvAck - 1;
- const long sample = ng_pptpgre_time(node) - a->timeSent[index];
+ long sample;
long diff;
/* Sanity check ack value */
@@ -648,6 +648,7 @@ bad:
priv->recvAck = ack;
/* Update adaptive timeout stuff */
+ sample = ng_pptpgre_time(node) - a->timeSent[index];
diff = sample - a->rtt;
a->rtt += PPTP_ACK_ALPHA(diff);
if (diff < 0)