BGP: Handle flowspec rules without dst part

The RFC 5575 does not explicitly reject flowspec rules without dst part,
it just requires dst part in validation procedure for feasibility, which
we do not implement anyway. Thus flow without dst prefix is syntactically
valid, but unfeasible (if feasibilty testing is done).

Thanks to Alex D. for the bugreport.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/net.h b/lib/net.h
index 0cd5f735..8eb4c7b9 100644
--- a/lib/net.h
+++ b/lib/net.h
@@ -174,10 +174,10 @@ extern const u16 net_max_text_length[];
   ((net_addr_roa6) { NET_ROA6, pxlen, sizeof(net_addr_roa6), prefix, max_pxlen, asn })
 
 #define NET_ADDR_FLOW4(prefix,pxlen,dlen) \
-  ((net_addr_flow4) { NET_FLOW4, pxlen, sizeof(net_addr_ip4) + dlen, prefix })
+  ((net_addr_flow4) { NET_FLOW4, pxlen, sizeof(net_addr_flow4) + dlen, prefix })
 
 #define NET_ADDR_FLOW6(prefix,pxlen,dlen) \
-  ((net_addr_flow6) { NET_FLOW6, pxlen, sizeof(net_addr_ip6) + dlen, prefix })
+  ((net_addr_flow6) { NET_FLOW6, pxlen, sizeof(net_addr_flow6) + dlen, prefix })
 
 #define NET_ADDR_IP6_SADR(dst_prefix,dst_pxlen,src_prefix,src_pxlen) \
   ((net_addr_ip6_sadr) { NET_IP6_SADR, dst_pxlen, sizeof(net_addr_ip6_sadr), dst_prefix, src_pxlen, src_prefix })