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-rw-r--r--net/ipv4/route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 4306db827374..bc40bd411196 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1250,7 +1250,7 @@ static void set_class_tag(struct rtable *rt, u32 tag)
static unsigned int ipv4_default_advmss(const struct dst_entry *dst)
{
unsigned int header_size = sizeof(struct tcphdr) + sizeof(struct iphdr);
- unsigned int advmss = max_t(unsigned int, dst->dev->mtu - header_size,
+ unsigned int advmss = max_t(unsigned int, ipv4_mtu(dst) - header_size,
ip_rt_min_advmss);
return min(advmss, IPV4_MAX_PMTU - header_size);