Hellow, On my BIRD router, I have two IPv4 BGP upstream neighbors. From them, my router receive 678,000 and 681,000 routes. On these BGP sessions, I have configured "receive limit 700000 action block". On this same router, I have one IPv4 BGP downstream neighbor. On this one, I have configured "export where proto = "static_allocations" || proto = "bgp_upstream1" || proto = "bgp_upstream2";" and "export limit 700000 action disable". "static_allocations" always contains only one route. BIRD frequently disables downstream neighbor's BGP session because the export limit has been exceeded. I can understand this behaviour: upstream1 may distribute routes that upstream2 does not have, but I see the same behavior with "export limit 750000 action disable". However, my upstreams do not provide me more than 50,000 different routes: # birdc sh route protocol bgp_upstream1 | grep -Po "[0-9./]+(?=[ ]+via)" | sort -n > bgp_upstream1 # birdc sh route protocol bgp_upstream2 | grep -Po "[0-9./]+(?=[ ]+via)" | sort -n > bgp_upstream2 # diff -b -w -y --suppress-common-lines bgp_upstream1 bgp_upstream2 | wc -l 3503 How is it possible to export more routes than I receive? In IPv6, with the same upstream and downstram neighbors and "receive limit" set to 50,000 and "export limit" set to 50,000, I have no problem. Regards.