diff options
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index a1f2830d8110..3e992783c1d0 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1246,7 +1246,9 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst) mtu = 576; } - return min_t(unsigned int, mtu, IP_MAX_MTU); + mtu = min_t(unsigned int, mtu, IP_MAX_MTU); + + return mtu - lwtunnel_headroom(dst->lwtstate, mtu); } static struct fib_nh_exception *find_exception(struct fib_nh *nh, __be32 daddr) |