[NETFILTER]: nf_nat_sip: don't drop short packets

Don't drop packets shorter than "SIP/2.0", just ignore them. Keep-alives
can validly be shorter for example.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/netfilter/nf_nat_sip.c b/net/ipv4/netfilter/nf_nat_sip.c
index a889ec3ec83a..e14d41976c27 100644
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -104,7 +104,7 @@ static unsigned int ip_nat_sip(struct sk_buff **pskb,
         dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
         datalen = (*pskb)->len - dataoff;
         if (datalen < sizeof("SIP/2.0") - 1)
-                return NF_DROP;
+                return NF_ACCEPT;
 
         addr_map_init(ct, &map);