diff options
Diffstat (limited to 'pimd/pim_join.c')
| -rw-r--r-- | pimd/pim_join.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/pimd/pim_join.c b/pimd/pim_join.c index ce4ec4e6..6b46759a 100644 --- a/pimd/pim_join.c +++ b/pimd/pim_join.c @@ -239,6 +239,19 @@ int pim_joinprune_recv(struct interface *ifp, if (addr_offset < 1) { return -7; } + + /* + RFC 4601: 4.9.1 Encoded Source and Group Address Formats + + Encoded-Source Address + (...) + The mask length MUST be equal to the mask length in bits for the + given Address Family and Encoding Type (32 for IPv4 native and + 128 for IPv6 native). A router SHOULD ignore any messages + received with any other mask length. + */ + if (msg_source_addr.prefixlen!=32) return; + buf += addr_offset; recv_join(ifp, neigh, msg_holdtime, @@ -257,6 +270,19 @@ int pim_joinprune_recv(struct interface *ifp, if (addr_offset < 1) { return -8; } + + /* + RFC 4601: 4.9.1 Encoded Source and Group Address Formats + + Encoded-Source Address + (...) + The mask length MUST be equal to the mask length in bits for the + given Address Family and Encoding Type (32 for IPv4 native and + 128 for IPv6 native). A router SHOULD ignore any messages + received with any other mask length. + */ + if (msg_source_addr.prefixlen!=32) return; + buf += addr_offset; recv_prune(ifp, neigh, msg_holdtime, |