diff options
| -rw-r--r-- | net/ipv6/af_inet6.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 9b6a37d16fb..61f55386a23 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -276,6 +276,8 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) /* Check if the address belongs to the host. */ if (addr_type == IPV6_ADDR_MAPPED) { + int chk_addr_ret; + /* Binding to v4-mapped address on a v6-only socket * makes no sense */ @@ -283,11 +285,17 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) err = -EINVAL; goto out; } + + /* Reproduce AF_INET checks to make the bindings consitant */ v4addr = addr->sin6_addr.s6_addr32[3]; - if (inet_addr_type(net, v4addr) != RTN_LOCAL) { - err = -EADDRNOTAVAIL; + chk_addr_ret = inet_addr_type(net, v4addr); + if (!sysctl_ip_nonlocal_bind && + !(inet->freebind || inet->transparent) && + v4addr != htonl(INADDR_ANY) && + chk_addr_ret != RTN_LOCAL && + chk_addr_ret != RTN_MULTICAST && + chk_addr_ret != RTN_BROADCAST) goto out; - } } else { if (addr_type != IPV6_ADDR_ANY) { struct net_device *dev = NULL; |