diff options
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
| -rw-r--r-- | net/ipv6/ip6_tunnel.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 87784560dc46..03e050d22508 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1637,7 +1637,7 @@ int ip6_tnl_change_mtu(struct net_device *dev, int new_mtu) struct ip6_tnl *tnl = netdev_priv(dev); if (tnl->parms.proto == IPPROTO_IPIP) { - if (new_mtu < 68) + if (new_mtu < ETH_MIN_MTU) return -EINVAL; } else { if (new_mtu < IPV6_MIN_MTU) @@ -1790,6 +1790,8 @@ ip6_tnl_dev_init_gen(struct net_device *dev) dev->mtu = ETH_DATA_LEN - t_hlen; if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) dev->mtu -= 8; + dev->min_mtu = ETH_MIN_MTU; + dev->max_mtu = 0xFFF8 - dev->hard_header_len; return 0; |